O-Rings | Seals | Springs

From standard designs to special sizes, special quantities or individual solutions - always with great experience, industry knowledge and expert advice.

Our products can be used for almost all industries, even industry-specific requirements such as FDA or NORSOK specifications can be met. We support markets such as: Food, Automotive, Pharmaceutical, Chemical & Process and Oil & Gas with our materials and products. Our dedicated quality management guarantees high quality and specialized products.
ISO 9001 certificate

Specialist knowledge from several markets and synergies from different application areas are your guarantee for optimal and cost-efficient solutions.

Flexible delivery and warehouse management

Speed, reliability and flexibility, excellent product knowledge are what set us apart. Just-in-time is a matter of course. Use call-off blanket orders to reduce delivery times and cut costs.

O-Rings for specialized applications

 

Precision O-Rings in all common materials and according to international standards.

O-Rings made from special compounds - for highly qualified applications and specialized requirements. O-Rings are available in certified compounds according to standards:

  • O-Rings vulcanized

  • Elastomers such as NBR, MVQ (silicone), FPM, EPDM, FFKM, FEPM

  • O-Rings PTFE coated

  • O-Rings FEP / PFA coated

  • O-Rings PTFE pure / seamless

 

 

High-precision O-Rings made of FEPM CHEMFLON®

FEPM in petroleum products, steam and phosphate esters

Precision O-Rings made of FEPM CHEMFLON®

FDA compliant / Standard 3A for multiple use - O-Rings made of FEPM / CHEMFLON® - for highly qualified applications and specialized requirements.

FEPM is a fluoroelastomer made from tetrafluoroethylene and propylene with a fluorine content of approximately 54% with outstanding resistance to petroleum products, steam and phosphate esters.

Extremely durable O-Rings and seals for Oil & Gas, Chemical and Pharmaceutical industries, Biotechnology and similar applications.

  • FDA-compliant O-Rings and seals
  • Sterilizable also ideally suited for use in SIP and ZIP.
  • Excellent hot water and steam resistance.
  • Reliable for long and maintenance-free processes.
  • FEPM O-Rings are ideally suited for heat transfer oils, some amines, acid and bases, as well as hot water and steam up to 230°C.
     

[ .. CHEMFLON® ]

FEPM Features

Typical properties depending on compound/material:

  • temperature range : -8°C to +275°C.
  • chemical resistance : petroleum, natural gas, sour gas, heat transfer oil, hot water/steam,
  • hydraulic and brake fluids, alcohols, ozone, silicone oils and greases, partly amines
  • specialist compounds developed for Rapid Gas Decompression (RGD) Resistance
  • hardness : 76 to 90 Shore A
  • color : black
  • approvals : FDA, USP Class VI, NORSOK M-710, API 6A, NACE TM0187
     

 

O-Rings made of nitrile rubber NBR

Precision O-Rings made of NBR (acrylonitrile butadiene rubber)

Nitrile rubber O-Rings - for highly qualified applications and specialized requirements and according to international standards.

NBR as standard material for applications in hydraulics and pneumatics, also many military elastomer specifications for use with fuels and oils require NBR as base polymer.

NBR compounds are superior to many other elastomers in terms of compression set and tear as well as abrasion resistance.

 

The abbreviation NBR is derived from Nitrile Butadiene Rubber. Nitrile rubber is obtained by copolymerizing acrylonitrile (ACN) and 1,3-butadiene.

Low-temperature compounds are offered specifically for use in contact with mineral oil-based fluids. For example, NBR can also meet other specific physical and chemical requirements through admixtures.

The acrylonitrile content in NBR influences behavior

The quality of an NBR compound is based on the percentage of acrylonitrile within the base polymer. The acrylonitrile content in NBR can range from 18% to 50% and affects

  • Swelling resistance in mineral oils, greases and fuels
  • Elasticity
  • Cold flexibility
  • Gas permeability
  • Compression set

NBR compounds are superior to many other elastomers in terms of compression set and tear and abrasion resistance.

  • high abrasion resistance and stability
  • for applications with oils, greases and waxes as well as other aliphatic hydrocarbons, diluted acids and alkalis
  • high resistance to additive-containing technical oils
  • low vapor and gas permeability
  • good low-temperature flexibility down to -50°C
  • good ozone resistance as well as high abrasion resistance
  • applications in hot water up to 100°C, heat resistance up to +135°C

The NBR material cannot be used in concentrated acids (e.g. nitric acid, formic acid), concentrated oxidizing media (e.g. peracetic acid) and in aromatic and chlorinated hydrocarbons. No good properties against ozone, sunlight or weathering.

Typical properties depending on compound/material:

  • temperature range : -54°C to +120°C.
  • Chem. resistance: mineral oil, greases, aliphatic hydrocarbons, fuels, alcohols, vegetable and animal oils, silicone oils, diluted acids and alkalis, water up to +80°C
  • Physical characteristics: static / dynamic use
  • Hardness : 50 to 90 Shore A
  • Color : black
  • Approvals : FDA, DVGW, WRAS

Typical industries

Aeronautical and aerospace
O-Rings and seals in special applications with hydraulic oil for landing gear, flight controls, spoilers, flaps, valves and accumulators.

Industrial Seals
Reliable seals for many applications where absolute safety, emission protection and low or no maintenance are required.

Multipurpose EPDM O-Rings

Precision EPDM (Ethylene Propylene Diene Rubber) O-Rings

EPDM O-rings according to international standards

Reliable seals for many applications where absolute safety, emission protection and low-maintenance or maintenance-free operation are required. Particularly suitable in aerospace applications where Skydrol® is used.

EPDM is an elastomer made from ethylene and propylene monomers (ethylene-propylene copolymer), sometimes with additions of a third monomer (ethylene-propylene terpolymer) with a wide range of applications in process technology.

Available in EPDM:

  • High-precision O-Rings
  • O-Rings for large diameters
  • Santitary Gaskets (pharmaceutical and food industry)
  • X-Rings / Quad Rings
 

 

Typical properties depending on compound/material:

  • Temperature range : -50°C to +150°C.
  • Chem. resistance (depending on cross-linking) : hot water/steam, alcohols, ketones, esters, diluted acids and alkalis, ozone, brake fluids (not mineral oil based), glycol-water mixture
  • Physical characteristics : static / dynamic use
  • Hardness : 65 to 90 Shore A
  • Color : black, white
  • Approvals : FDA, USP Class VI, EG1935-2004

Advantages of EPDM:

  • very good aging, ozone and light resistance
  • excellent resistance to water and aqueous systems
  • high resistance to cold and heat
  • approx. -50 °C to +160 °C
  • good elongation at break and strength
  • very high abrasion resistance

EPDM compounds are not recommended for use in contact with gasoline, mineral oil and lubricants, or hydrocarbon environments.
EPDM has limited use in products containing grease and oil: Good properties with animal fats at low temperatures, not recommended in pure fats and oils at elevated temperatures.

Suitable applications for EPDM O-Rings

  • in hot water and steam (permanently 160 °C, briefly 180 °C)
  • acids (hydrochloric acid, nitric acid and phosphoric acid)
  • Alkalis (sodium hydroxide solution, potassium hydroxide solution) Ozone (40 °C, 1000 pphm)
  • CIP/SIP media for continuous plants in food, beverage and pharmaceutical industries
  • Assembly grease to be used: Silicone grease (e.g. Paraliq GTE 703 with NSF H1 approval)
  • see also PTFE Spray

Aeronautics and aerospace
O-Rings and seals in special applications for flight controls, engines, brake systems, spoilers, flaps, valves and pressure accumulators. Especially suitable when using Skydrol®!

Chemical and Pharmaceutical Industry / Food
Extremely stressable O-Rings and seals for chemical, pharmaceutical, biotechnology and similar applications. FDA-compliant O-Rings and seals, sterilizable also ideally suited for use in SIP and ZIP. Excellent hot water and steam resistance. Reliable for long and maintenance-free processes.

Precision O-Rings made of FFKM / FFPM perfluoroelastomers

FFKM / FFPM for aggressive media and high heat

Precision O-Rings made of FFKM / FFPM Perfluoroelastomers

O-Rings for equipment and machinery such as mechanical seals, valves, pumps, mixers and fermenters.

Only sealing elements made of perfluoroelastomer combine the almost universal chemical resistance of PTFE with the typical sealing properties of rubber and its compression set and creep resistance.

Features

Perfluoroelastomers (FFKM) are terpolymers consisting of tetrafluoroethylene (TFE), perfluoromethyl vinyl ether (PMVE) and a crosslinking monomer (cure site monomer = CSM). Tetrafluoroethylene (TFE) provides the chemical resistance as the base monomer, while the elastic properties are achieved by crosslinking with PMVE as well as with the perfluorinated crosslinking monomer (CSM).

Typical features depending on the mixture/material:

  • Temperature range : -40°C to +330°C.
  • Chemical resistance : Universal - compatible with PTFE, chemicals, solvents, hot water/steam, amines
  • Physical characteristics : static / dynamic use, against Rapid Gas Decompression
  • Hardness : 60 to 90 Shore A
  • Color : black, white, transparent (amber)
  • Approvals : FDA, USP Class VI, EU1935-2004, NORSOK M-710, API 6A, NACE TM0187

Our recommendation: [ .. KEDFLON®

For many applications there is little or no alternative to perfluoroelastomers.

FFKM alternatives

Typical properties depending on compound/material:

  • Temperature range : -60°C to +230°C.
  • Chem. resistance : similar to FFKM, chemicals, solvents, partly amines, ketones, hydrofluoric acid
  • Physical characteristics : stat. Use
  • Hardness : 70 Shore A
  • Color : black
  • Approvals : none

Typical industries

Chemicals, Paints & Coatings, Semiconductor Technology, Clean Room Technology, Aerospace, Oil & Gas, etc.

  • wherever aggressive media are used
  • in original equipment e.g. pumps, valves, compressors, mechanical seals
  • Oil & Gas Industry for extremes of temperature, pressure and aggressive chemicals used downhole
  • in the petrochemical industry and in refineries (explosive decompression)
  • according to individual requirements, e.g. corresponding customer drawings

FFKM round cords

FFKM round cords

Exceptional chemical and thermal resistance - any diameter.

Using a patented FFKM adhesive, KEDFLON round cord can be hot butt vulcanized and bonded together to any desired diameter. In hot-joint vulcanization, the two ends of the round cord are indissolubly cross-linked together at the molecular level and completely without necking, so that the joint is hardly noticeable.

  • Less expensive production of very large O-Rings .
  • Faster availability, due to significantly shorter production times.
  • Shorter downtime of your production

KEDFLON FFKM round cords are available in the (American) standard cord sizes
(mm) 1,78  |  2,62  |  3,53  |  5,33  |  6,99.

Features

Our KEDFLON perfluoroelastomer (FFKM) round cords offer you not only exceptional chemical and thermal resistance, but also a combination of low compression set and excellent sealing properties at the same time..

Perfluoroelastomers (FFKM) are terpolymers consisting of tetrafluoroethylene (TFE), perfluoromethyl vinyl ether (PMVE) and a crosslinking monomer (cure site monomer = CSM). Tetrafluoroethylene (TFE) provides the chemical resistance as the base monomer, while the elastic properties are achieved by crosslinking with PMVE as well as with the perfluorinated crosslinking monomer (CSM).

  • Temperature range: - 40 °C to 310 °C, briefly up to 330 °C
  • Hot water and steam resistance
  • Low compression set
  • Can be used in explosive decompression
  • Extended application range compared to conventional elastomers (NBR, FKM, etc.)
  • No creep or 'cold flow', as with PTFE
  • Extension of service life (lower repair costs)
  • Easy assembly
  • Reduces production downtime

Our recommendation: [ .. KEDFLON®

For many applications, there is little or no alternative to perfluoroelastomers.

KED-Seals sets standards in service & know-how that will delight you.

O-Rings for challenging applications

O-Rings XXL - large or non-standard diameters

O-Rings XXL - large or non-standard diameters

The solution for critical applications - without seams!

We supply O-Rings that can also be used in large diameters for gases, high pressure, vacuum or dynamic applications. Our O-Rings are vulcanized in stages using special processes and therefore have no 'seams'.

This results in a heavy-duty product that can be manufactured in virtually any size and cord thickness:

  • No glue joints or double vulcanization.
  • Constant cord thickness over the entire circumference
  • No weak points - neither chemical nor physical

Since no tooling costs are incurred for standard cord thicknesses, the process is so cost-effective that even special designs and small quantities are economical. sind.

O-Rings with this manufacturing process can be made from a wide variety of elastomers / materials:

  • EPDM
  • FKM
  • FFKM (KEDFLON®)
  • NBR
  • HNBR
  • CHEMFLON™

Even more cost-effective:
The solution for less critical applications -> shock-vulcanized O-Rings!

O-Rings / seals against explosive decompression

O-Rings / seals against explosive decompression

Tested and qualified according to NORSOK M-170 & NACE TM 18

Under pressure, only specially formulated elastomers can be used that have a very tightly cross-linked structure and thus are characterized by first-class physical properties, such as HNBR, FKM, FEKM and FFPM.

Chemically and thermally resistant seals and O-Rings for high stresses

 

Specially structured elastomers for increased safety.

The special FKM (fluororubber) reliably avoids damage to the seal even during extreme pressure changes or pressure reduction due to its special inner structure and correspondingly high hardness. Especially at high pressures, gap extrusion is avoided.Using the right seals for application areas with explosive decompression means a significant reduction in operating costs.

The key benefits:

  • Optimum resistance to explosive decompression.
  • Optimal thermal and chemical resistance
  • Optimal mechanical properties

Ask about our special KEDFLON™ against explosive decompression.

NORSOK M-710

NORSOK/ISO approval for polymer sealing materials

As part of the approval process, KED-Seals had to demonstrate that its products met high standards for manufacturing technology and acceptance testing. This enables us to support our customers in obtaining NORSOK M710 / ISO 23936-2 approval for their assemblies.

NORSOK standards were developed by the Norwegian petroleum industry to provide reasonable assurance and also cost efficiency in the development and operation of equipment for its own economic factor, and thus to serve as reference standards for government regulations.

In accordance with Appendix C, the tests allow predictions to be made about the behavior of the polymeric materials and the service life of the seal in demanding oil production applications.
Ideally, the materials should exceed the high product life of an oil and gas facility of 30 years. These standards are extremely stringent and recognized worldwide.

The NORSOK M-710 standard defines the requirements for critical non-metallic (polymeric) sealing materials for continuous use underwater and on valves in surface applications in critical gas systems. Likewise, the M-710 standard includes RGD testing (ED testing / Explosive Decompression) and testing of the effects of sour gas (H2S) with respect to the aging behavior of polymers.

FEP / PFA coated O-rings

FEP / PFA coated O-Rings

O-Rings with a jacket of FEP (fluorinated ethylene propylene) or PFA (perfluoroalkoxy)

Compliance with FDA 21 CFR 177.1550

FEP / PFA jacketed O-Rings consist of an elastic core e.g. fluororubber (FKM) or silicone rubber (MVQ)) for constant recovery and uniform contact pressure of the jacket on the sealing point and a seamless jacket made of high-quality fluoroplastics (FEP or PFA) for reliable sealing.

Advantages:

  • no tooling costs
  • inexpensive alternative to FFKM, e.g. in mechanical seals (static O-Ring)
  • short delivery times
  • low manufacturing costs

For flexibility and easy adaptation, an FKM or silicone hollow core is also suitable - from a cord thickness of 6 mm. We are also happy to supply special designs according to your requirements.

Jacketed O-Rings can be manufactured in almost any size. We can supply almost any inside diameter and cord size. To avoid buckling of the FEP / PFA jacket, the minimum inner diameter is limited.Suitable for extremely high thermal loads.

Typical properties depending on compound/material:

  • Temperature range: -60°C to +230°C (depending on design and applied pressure) .
  • Chemical resistance: similar to PTFE.
    Hydrocarbons, amines, aromatic solvents, hydrogen sulphide (H2S). various highly concentrated acids, and alkalis and highly corrosive gases.
  • Physical properties: static/ dynamic use.
  • Hardness : 87 to 92 95 Shore A • Color: black.

Chemical resistance of FEP and PFA coated O-Rings

FEP / PFA jacketed O-Rings are resistant to most solvents and chemicals and have a very low coefficient of friction. The respective fluororubber or silicone rubber O-Ring is seamlessly enclosed by a thin-walled jacket made of FEP or PFA. The jacket is the essential component for chemical resistance to virtually all chemicals. At normal temperatures, the jacket guarantees protection against chemicals.

  • Alphatic hydrocarbons (gasoline, butane, propane, natural gas)
  • aromatic hydrocarbons (benzene, toluene)
  • Chlorinated hydrocarbons
  • High vacuum
  • Fuels (also methanol-containing fuels)
  • Mineral oils and mineral greases (low swelling with ASTM oil 1-3)
  • Ozone resistance very good, weather resistance and aging resistance
  • Vegetable and animal oils and greases
  • Flame retardant pressure fluids (HFD)
  • Silicone oils and greases

Not or only slightly resistant to

  • Ammonia gas, amines, alkalis, glycol-based brake fluids
  • Low molecular organic acids (formic acid and acetic acid)
  • Polar solvents (acetone, methyl ethyl ketone, ethyl acetate, diethyl ether, dioxane)
  • Skydrol 500 and Skydrol 7000
  • Superheated water vapor

Diffusion

The FEP jacket of O-Rings has a very low permeability to gas and vapor, which increases with temperature and contact area and decreases with a thicker jacket. The lowest diffusion for FEP jacketed O-Rings occurs from a jacket thickness of 0.3 mm occurs.

FEP and PFA coated O-Rings are suitable for

  • extremely high thermal loads
  • pressure up to 70 bar / with back-up rings up to 200 bar
  • the vacuum range

Features

  • Particularly low absorption of alkalis, acids, solvents
  • Excellent sliding properties
  • Improved dry running properties due to lubricant increase service life
  • Highest chemical resistance

Typical applications / industries

  • Plant engineering (chemical, pharmaceutical production)
  • Apparatus engineering (chemical, pharmaceutical production)
  • Fittings construction
  • Glass plant construction / glass connections
  • Pumps / Dosing technology
  • Refrigeration
  • Mechanical engineering
  • Food industry / Beverage industry
  • Petrochemistry
  • Laboratory technology / Medical technology
  • Vacuum technology

Seals and O-Rings FKM / FPM

Seals and O-Rings made of fluorinated elastomers FKM / FPM

FKM (according to ASTM) / FPM (according to DIN / ISO)

(fluoroelastomers / fluorocarbon / fluororubber)

The fluorinated elastomers (fluoroelastomers) are highly fluorinated carbon-based long polymer chains formed during vulcanization. This makes them more stable and resistant to high temperatures and chemical attack compared to other conventional elastomers.

FKM / FPM seals can be used in high vacuum applications and are suitable for use in aircraft, automobiles and other mechanical equipment, especially when maximum resistance to elevated temperatures and many fluids is required.

O-Rings and seals made of fluoroelastomer

  • High resistance e.g. against
    • many chemicals
    • organic solvents,
    • ozone,
    • oxygen
  • at the same time
    • low permeability for gases and
    • oxygen-containing liquids.
  • low compression set.

Resistance:

  • excellent resistance to high temperatures and excellent performance at low temperatures (from -60 ° C to +250 ° C for short periods - depending on the mixture).
  • Alphatic hydrocarbons (gasoline, butane, propane, natural gas)
  • Aromatic hydrocarbons (benzene, toluene)
  • chlorinated hydrocarbons
  • High vacuum
  • Fuels (also methanol-containing fuels)
  • Mineral oils and mineral fats (low swelling with ASTM oil 1-3)
  • Ozone resistance very good, weather resistance and aging resistance
  • Vegetable and animal oils and greases
  • Flame retardant pressure fluids (HFD)
  • Silicone oils and greases

Not / low resistant

  • Ammonia gas, amines, alkalis, glycol-based brake fluids
  • Low molecular organic acids (formic acid and acetic acid)
  • Polar solvents (acetone, methyl ethyl ketone, ethyl acetate, diethyl ether, dioxane)
  • Skydrol 500 and Skydrol 7000
  • Superheated water vapor

Applications of FKM / FPM

FKM / FPM seals can be used in high vacuum applications and are suitable for use in aircraft, automobiles and other mechanical equipment, especially when maximum resistance to elevated temperatures and many fluids is required.

FKM compounds often have a particularly high shrinkage rate. Special compounds have improved chemical resistance; in general, the greater the fluorine content, the higher the chemical resistance.
FKM / FPM fluoroelastomers are more stable and resistant to high temperatures and chemical attack: cold resistance down to about -60°C, heat resistance up to about +250°C maximum.

Typical applications

  • Plant engineering (chemical, pharmaceutical production)
  • Apparatus engineering (chemical industry, pharmaceutical production)
  • Fittings construction
  • Glass plant construction / glass connections
  • Pumps / Dosing technology
  • Refrigeration
  • Mechanical engineering
  • Food industry / Beverage industry
  • Petrochemistry
  • Laboratory technology / Medical technology
  • Vacuum technology

X-Rings - Quad-Rings

X-Rings - Quad-Rings

Precision X Rings / Quad Lip Rings in all common materials and according to international standards

X-Rings made of special compounds - for highly qualified applications and specialized requirements. X-Rings are available in certified compounds e.g. elastomer such as NBR, MVQ (silicone), FPM, FKM, EPDM, FFKM, FEPM (Chemflon®). X-Rings/ Quad-Rings are self-acting double-acting sealing elements:

  • Diametrical compression in a rectangular groove.
  • Sealing by system pressure
  • Direction of action on both sides

The compression and injection processes used guarantee X Rings / Quad Rings with very tight manufacturing tolerances. Our Precision X Rings are mainly used in the aerospace, chemical and pharmaceutical, petrochemical and refinery industries.

 

X Rings - Quad Lip Rings (Quad Rings)

X Rings are self-acting, double-acting sealing elements with a specially developed four-lip profile available in NBR, FKM, EPDM, FEPM, FFKM and MVQ.

Compared to an O-Ring, the X Ring offers a double sealing function. It requires less precompression, which results in reduced friction during dynamic use. Due to the specially developed four-lip profile, the X Ring does not tend to twist in the groove during reciprocating movements.

X Rings can be used as dynamic or static seals in a wide range of applications. The selection of the suitable material depends on temperature, pressure and the medium to be sealed.

 

Advantages: X Rings vs. O Rings

  • Compared to the O-Ring, the X Ring has a double sealing function. It requires less precompression, which results in reduced friction during dynamic use.
  • Safety against twisting. Due to its special four-lip profile, the seal does not tend to roll in the groove (during reciprocating motion).
  • Low friction. With comparable O-Ring sealing, the X Ring is less radially preloaded. Smaller contact forces result in less friction, less wear and therefore longer service life.
  • Very good sealing behavior. Due to a more favorable distribution of pressure over the cross-section, high tightness is achieved.
  • Moulding flash line. This is located on the inner or outer diameter of the O-Ring and in some applications can be detrimental to sealing performance, but on the X-Ring it is located between the sealing lips
  • A lubricant reservoir can form between the sealing lips.

Depending on the elastomer type, FDA-compliant X Rings are

  • sterilizable
  • also ideally suited for use in SIP and ZIP
  • excellent hot water and steam resistance
  • reliable for long and maintenance-free processes.

Advantages: X Rings vs. O Rings

  • Less diametral compression required, causes less wear due to less friction
  • Higher sealing performance due to four sealing lips, these simultaneously form a lubrication groove
  • Greater stability in dynamic applications, no twisting in the groove, less torsion

Our Precision X Rings are mainly used in these industries:

  • Industrial seals
    Reliable seals for many applications where absolute safety, emission protection and low or no maintenance are required. Examples: Aggressive fluids, high pressure, extreme temperatures and many more.
  • Aeronautics and Aerospace
    V-rings / four-lip rings for special applications for landing gears, flight controls, engines, braking systems, spoilers, flaps, valves and pressure accumulators.
  • Chemical and pharmaceutical industry
    Extremely stressable X Rings / Quad Rings for chemical, pharmaceutical, biotechnology and similar applications.
  • Petrochemical and refineries
    X Rings / Quad Rings for special use in high pressure and low temperature applications, as well as for rapid pressure changes (Alt explosive decompression).

Seals and springs for almost all constructions

Spring-loaded seals and sealing elements made of PTFE

Spring-loaded seals and sealing elements made of PTFE / (polytetrafluoroethylene) and PTFE compounds

High performance seals for almost all designs

Spring-assisted seals / lip seals made of PTFE (polytetrafluoroethylene) use a preloaded corrosion-resistant metal spring to create a tight seal. The metal spring is inserted into the U-shaped PTFE body as a preload element. The spring's clamping force reduces seal wear and compensates for eccentricity.

This provides sufficient sealing force even at low pressure. At high pressure, spring-loaded PTFE seals provide optimized sealing and reliable protection against leakage.

Frequently used PTFE compounds

 
  • pure (virgin)
  • graphite-filled
  • polyester-filled
 
 
  • glass-filled
  • mineral-filled
  • carbon-filled
 
 

Spring materials

  • Stainless steel for general use in oil, water, gas, etc.
  • Hastelloy C or Elgiloy for use in extremely aggressive media

Spring types

  • U- or V- Spring (dynamic, static, flange -50°C to +260°C)
  • Coil - Spring (static, slow, dynamic, flange -160°C to +260°C)

Advantages with spring-supported seals / grooved rings made of PTFE:

  • Excellent chemical resistance
  • Economical
  • Low friction for smooth running
  • No stick slip effect
  • Good emergency running properties in unfavorable lubrication conditions
  • Long service life, even when running dry, due to wear-resistant PTFE compounds
  • Low breakaway and movement friction
  • Suitable for almost all O-Ring grooves
  • No design limitations, suitable for static, axial dynamic and rotary applications
  • No damage due to explosive decompression
  • High temperature range, from -250°C to +260°C depending on design
  • High pressure range (from vacuum to 2000 bar)
  • Gas seals – these must be engineered and designed to have the optimum seal geometry, material choice and hardware design.

Application scenarios

  • Ball valves
  • Downhole safety valves and flow control equipment
  • Valve spigots, metering devices
  • Valves for hot water or steam, e.g. for filling machines
  • Mixing systems
  • Mechanical engineering
  • pumps, piston pumps
  • hydraulic cylinders, pneumatic cylinders
  • Measuring devices
  • Compressors, pressure vessels
  • Automotive industry
  • Aerospace industry
  • Engines
  • Fire extinguishing systems
  • Medical technology / endoscopy
  • Solenoid valves
  • Measurement technology/ HPLC technology
  • Chemical plant engineering

Sanitary Gaskets Standard 3-A, FDA compliant

Sanitary Gaskets FDA compliant

Sanitary Gaskets Standard 3-A for multiple use / FDA-compliant gaskets particularly cost-effective

Selecting the right gasket can increase average operating life, reducing costly and unplanned downtime, dangerous leaks and product contamination.

FDA compliant and biocompatible.

CHEMFLON® 1285 represents a new FEPM grade ( based on Aflas from AsahiGlass ) that is significantly superior to materials such as silicone, EPDM and FKM, especially under aggressive conditions. The applicable requirements for biocompatibility according to USP (United States Pharmacopeia) Class VI can also be met.

  At the same time, CHEMFLON® 1285 is considerably more cost-effective than expensive FFKM / FDA materials.

Sanitary Gaskets made of CHEMFLON® 1285 according to FDA 21CFR177.2600 with FCN number are characterized by

  • a broad chemical resistance,
  • an excellent compression set and
  • low thermal expansion compared to other fluoroelastomers.

They are available or can be manufactured in all sizes for Tri-Clover®, Tri-Clamp® installations as well as O-Rings according to AS-568A and, of course, also in customer-specific shapes.

KED-Seals products are particularly suitable for the pharmaceutical industry.

Due to the high purity requirements in the pharmaceutical industry, problematic additives are replaced in the material and fillers are selected according to FDA regulations and guidelines. CHEMFLON® 1285 also complies with health standard 3-A for multiple use.

However, companies in the biotechnology, food and beverage industries also have increasingly stringent requirements in their manufacturing processes.

Hot water and steam resistance for applications such as

  • Steam-In-Place (SIP)
  • Clean-In-Place (CIP) and
  • Water-for-Injection and the
  • resistance to chemicals, in particular acids, are of particular

are in particular demand for the new applications in sterile technology and food production.

V-Springs

V-Springs

Various sizes and materials, also made to measure

V-springs can be used in conjunction with plastic seals or elastomer seals, but can also be used as preload elements (spring-loaded seals or lip seals / spring-biased PTFE seals) or carriers.

The combination of the material properties of spring steel and high-quality PTFE fluoroplastics guarantees high and lasting elasticity, compensates for cold flow and wear on the sealing lip, and produces defined, low compressive forces.

These V-springs are available in 6 standard sizes and customer-defined formats or dimensions - according to your specific application requirements.

 

The combination of the material properties of spring steel and high-quality PTFE fluoroplastics is particularly suitable for

  • dynamic use
  • normal pressures
  • axial and radial compression

V-springs are particularly suitable in seals for static applications as flange or vessel seals and the sealing of rotating shafts as well as piston seals or rod seals.

Material and format according to requirements

Our V-springs are made of various stainless steels (e.g. Hastelloy C or Inconel, 316SS or 301SS) and coated with alloys such as gold, silver or nickel, offering corrosion resistance even under high loads. The springs are helically wound endless (self-contained) and have a round cross-section.

V-springs are insert elements (spring support elements) that give chemical-resistant sealing materials such as PTFE a constant preload without the usual settling behavior of elastomers or plastics.

They are used for

  • Automotive,
  • hydraulic and pneumatic cylinders,
  • hot water valves,
  • pumps,
  • steam turbines,
  • food processing,
  • chemical and process engineering, and
  • medical technology.

Diametral Springs / Slanted Coil Springs

Diametral Springs / Slanted Coil Springs / Slanted Coil Springs

Very flat load curve with axial load

Slanted coil springs can be used in conjunction with plastic seals or also elastomer seals, but can also be used as preloading elements or drivers.

Material and format according to requirements

Our diametral springs are made of various stainless steels, such as Hastelloy C or Inconel, or other alloys such as gold, silver or nickel, and offer corrosion resistance even under high loads. These diametral springs are available in light, medium and high-load designs in both standard and custom formats or dimensions - according to your specific application requirements.

 

Diametral springs or tilted coil springs (springs with tilted coils)
are self-contained annular coil springs or annular springs that are tilted along their center axis for axial loading so that within a given deflection range the force developed remains relatively constant. Diametral springs therefore have a very flat load curve.

Slanted coil springs or diametral springs give chemical-resistant seal materials additional spring properties and constant preload without the usual settling behavior of elastomers or plastics. 

PTFE spray for industrial use

PTFE spray for industrial use

PTFE Polytetrafluoroethylene Molecules - Grease-free anti-adhesive lubricant.

PTFE Spray is a high performance PTFE based lubricant for long term lubrication points throughout industry. Due to the high PTFE content (polytetrafluoroethylene), excellent lubricating properties, highest possible corrosion protection, water displacement and preservation are achieved in one product. PTFE spray is also suitable whenever other lubricants, such as mineral oils or silicones, are undesirable in the application or further processing.

PTFE has a high pressure and temperature resistance and guarantees self-lubrication over a longer period of time and at the same time ensures wear reduction.

 

Properties

  • Long-term effect - even under extreme conditions
  • very good adhesion
  • long-term corrosion protection, water repellent
  • very good creep and penetration properties
  • adheres to even the smallest irregularities
  • reduces friction and wear, ideal when different materials rub against each other
  • temperature resistant
    Actual from -  50 to +280ºC
    Target from -100 to +280ºC

Universally applicable

PTFE spray is almost universally applicable in electrical engineering, mechanics, plastics processing, paper industry, textile industry, etc. and is excellently suited for the lubrication of conveyor belts, running bearings, slideways, rollers, guide rails, telescopic guides, in precision mechanics, on cable pulls, chains, gears, cogwheels and much more.

Typical industries

PTFE is particularly suitable for the pharmaceutical, biotechnology, food and beverage industries, i.e. when hygienic dry lubrication is required or when different materials are used, such as rubber on glass or wood on metal.

PTFE spray adheres even to microscopic irregularities and thus gives any material effective sliding properties.

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