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The right material makes the seal

Every custom seal is CNC-machined from billet stock in one of 50 grades: polyurethanes, PTFE compounds, rubbers and engineering plastics. Search by temperature or approval below. Not sure which to pick? Describe your application and our team will recommend one.

Material families

What each material is good at

An overview of each material family. The bars show the continuous operating range on a −200 °C to +260 °C scale. A plus sign marks a strength and a minus sign a limitation. Grades within a family can differ, so always check the grade itself.

Polyurethane seals

Polyurethane

PU / TPU

High mechanical strength and outstanding abrasion resistance, available across a wide hardness range. The most widely used material for hydraulic seals.

-30 °C+135 °C
  • Mineral oils, greases, water/oil mixtures
  • Aliphatic hydrocarbons
  • Very good ozone & oxidation resistance
  • High extrusion resistance
  • Polar solvents and aromatics
  • Brake fluids
  • Acids and alkalis
Typical uses: Rod & piston seals, wipers, static seals, diaphragms · See grades →
PTFE compounds seals

PTFE compounds

PTFE / TFM

Resists acids, bases, alcohols, ketones, fuels and oils. Low friction and high wear resistance make it right for high speeds. Fillers tune it to each job.

-200 °C+260 °C
  • Bronze: mineral hydraulic oils, high pressure, low wear
  • Carbon-graphite: dry running, water & oil, pneumatics
  • Glass + MoS₂: water-based fluids, high pressure
  • TFM: low deformation & permeability
  • Not elastic: usually paired with an elastomer energizer
  • Glass-filled grades need hard counter-surfaces
Typical uses: Dynamic seals, rotary seals, back-up rings, guides · See grades →

Nitrile rubber

NBR

General-purpose rubber for oils and fuels, with very good compression set. Low-temperature grades stay flexible down to −50 °C.

-50 °C+105 °C
  • Mineral oils & grease
  • Fuels
  • Aliphatic hydrocarbons (propane, butane)
  • Very good compression set

Hydrogenated nitrile

HNBR

Used where higher temperature resistance is needed. Very good mechanical properties and abrasion resistance.

-30 °C+150 °C
  • Up to +150 °C
  • Very good mechanical properties
  • Good abrasion resistance

Fluoroelastomer

FKM

Very good resistance to many chemicals, with low gas permeability. Widely used in steel and automotive applications.

-30 °C+210 °C
  • High temperature, to +210 °C
  • Many chemicals
  • Low gas permeability
Typical uses: Steel industry, automotive · See grades →

EPDM rubber

EPDM

The rubber for hot water, steam and many acids and alkalis. The preferred choice for food and beverage equipment.

-50 °C+140 °C
  • Hot water & steam
  • Many acids and alkalis
  • Very good compression set
  • Low resistance to oils and organic fluids
Typical uses: Food & beverage equipment · See grades →

Silicone

VMQ

High resistance to ozone, oxygen, UV and heat, and stays flexible at very low temperatures.

-60 °C+210 °C
  • Ozone, oxygen & UV
  • Very wide temperature range
  • FDA grades available
  • Low oil & fuel resistance
  • High gas permeability
  • Not strong enough for dynamic use
Typical uses: High-temperature applications · See grades →

Polyester elastomer

TPE

Combines rubber flexibility with plastic strength. Very tough, and resists tearing, cut growth, creep and abrasion.

-40 °C+120 °C
  • Tear, creep & abrasion resistance
  • Resistant to hydrocarbons
  • High temperature grade to +120 °C

Engineering plastics

POM · PA · UHMW-PE · PEEK

Rigid materials for guiding and anti-extrusion elements.

-200 °C+250 °C
  • POM: guide elements, dimensionally stable
  • PA: long-term load, shock absorbing
  • UHMW-PE: low friction, abrasion & impact resistance
  • PEEK: up to +250 °C
Typical uses: Guide elements, back-up rings, special products · See grades →
Full material list

Find your grade

Search, filter by family, or enter your operating temperature to see only the grades that can handle it. Click a column header to sort.

Showing 50 of 50 grades
Code Material Colour Hardness Temp range °C Description Approvals
BP-EP80-01EPDMBlue80 Shore A -50 / +135Metal & X-ray detectable EPDMFDADETECTABLEQuote →
BP-EP85-01EPDMBlack85 Shore A -50 / +130Standard EPDM—Quote →
BP-EP85-02EPDMWhite85 Shore A -50 / +100Food-grade white EPDMFDAQuote →
BP-EP85-03EPDMBlack85 Shore A -50 / +120Drinking-water EPDMKTWQuote →
BP-FK80-01FKMBlue80 Shore A -30 / +200Metal & X-ray detectable FKMFDADETECTABLEQuote →
BP-FK85-01FKMBrown85 Shore A -30 / +210Standard FKM—Quote →
BP-FK85-02FKMBrown85 Shore A -30 / +210Food-grade FKMFDAQuote →
BP-FK85-03FKMBlack85 Shore A -30 / +210Standard black FKM—Quote →
BP-HN85-01HNBRBlack85 Shore A -25 / +150Standard HNBR—Quote →
BP-NB80-01NBRBlack80 Shore A -50 / +100Low temperature NBR—Quote →
BP-NB85-01NBRBlack85 Shore A -25 / +100Standard NBR—Quote →
BP-NB85-02NBRWhite85 Shore A -22 / +100Food-grade NBRFDAQuote →
BP-PA-01PACream— -40 / +105Food-grade natural polyamideFDAQuote →
BP-PK-01PEEKCreamAsk us -50 / +250Standard PEEKFDAQuote →
BP-POM-01POMWhite— -40 / +120Food-grade acetalFDAQuote →
BP-PT-01PTFEWhite55 Shore D -200 / +260Virgin PTFE—Quote →
BP-PT-05PTFEBlack55 Shore D -200 / +260PTFE + glass fibre + MoS₂—Quote →
BP-PT-06PTFECream55 Shore D -200 / +260PTFE + LCP—Quote →
BP-PT-07PTFEWhite55 Shore D -200 / +260PTFE + 15% glass fibre—Quote →
BP-PT-08PTFETurquoise55 Shore D -200 / +260PTFE special filled—Quote →
BP-PT-09PTFEBlack55 Shore D -200 / +260PTFE + soft carbon—Quote →
BP-PT-11PTFEWhite55 Shore D -200 / +260Virgin PTFE, food gradeFDAQuote →
BP-PT-12PTFEHoney58 Shore D -200 / +260PTFE + 10% polyimide (PI)—Quote →
BP-PT-13PTFEGreen58 Shore D -200 / +260PTFE + 40% bronze—Quote →
BP-PT-15PTFEBlack60 Shore D -200 / +260PTFE + carbon-graphite—Quote →
BP-PT-18PTFEBrown62 Shore D -200 / +260PTFE + 60% bronze + carbon—Quote →
BP-PT-19PTFEWhite60 Shore D -200 / +260Modified PTFE (TFM)FDAQuote →
BP-PT-20PTFEBlack60 Shore D -200 / +260PTFE + MoS₂—Quote →
BP-PT-21PTFEBrown60 Shore D -200 / +260PTFE + 10% carbon—Quote →
BP-PT-23PTFEBlue60 Shore D -200 / +260TFM PTFE—Quote →
BP-PT-24PTFEBlack60 Shore D -200 / +260PTFE + 25% carbon fibre—Quote →
BP-PT-27PTFEDark grey60 Shore D -200 / +260Special PTFE—Quote →
BP-PT-33PTFEBlack60 Shore D -200 / +260TFM PTFE + 10% carbon fibre—Quote →
BP-PT-34PTFEGrey60 Shore D -200 / +260PTFE, stainless steel filledFDAQuote →
BP-PT-37PTFEBlue60 Shore D -200 / +260Metal & X-ray detectable PTFEFDADETECTABLEQuote →
BP-PT-52PTFEBlack65 Shore D -200 / +260PTFE + hard carbon—Quote →
BP-PU57-01PUBlueAsk us -30 / +90Hard PUFDAQuote →
BP-PU57-02PUGreyAsk us -30 / +90Hard PU with MoS₂—Quote →
BP-PU90-01PULight green90 Shore A -30 / +115Low hardness PU—Quote →
BP-PU95-01PURed95 Shore A -30 / +125Premium PUFDAQuote →
BP-PU95-02PUGrey95 Shore A -30 / +105PU with MoS₂, reduced friction—Quote →
BP-PU95-03PUBlue95 Shore A -50 / +105Low temperature PUFDAQuote →
BP-PU95-04PUViolet95 Shore A -30 / +115Chemical resistant PUFDAQuote →
BP-PU95-05PUOrange95 Shore A -20 / +135High temperature PU—Quote →
BP-PU95-06PUBlue95 Shore A -20 / +90Metal & X-ray detectable PUFDADETECTABLEQuote →
BP-PU95-07PUBlue95 Shore A -30 / +125High performance PUFDAQuote →
BP-SI85-01SiliconeRed85 Shore A -55 / +210Food-grade siliconeFDAQuote →
BP-TPE55-01TPE (polyester)Orange55 Shore D -30 / +120High temperature TPE—Quote →
BP-UH-01UHMW-PEWhite— -200 / +80Standard UHMW-PEFDAQuote →
BP-UH-02UHMW-PEBlue— -200 / +90High performance UHMW-PEFDAQuote →

Temperature ranges are continuous operating limits for the material. Actual limits also depend on pressure, speed, media and seal design. Rows marked “Ask us” are being confirmed. Datasheets are available on request.

Storage & shelf life

Keeping spare seals in good condition

Ordering spares in bulk? Store them well and they will last for years. These are the standard recommendations for storing elastomer and polymer seals.

Storage conditions

  • Store at 5–25 °C; warm to above 20 °C before fitting
  • Relative humidity at or below 60%
  • Keep sealed in polyethylene bags, free of load
  • Keep away from sunlight, UV and ozone sources
  • Keep away from solvents, oils, copper and manganese

Shelf life by material (ISO 2230)

Shelf lifeMaterials
5 yearsPU / TPU, TPE, POM, PA
7 yearsNBR, HNBR
10 yearsFKM, EPDM, Silicone (VMQ)
UnlimitedPTFE
Semi-finished stock

Tubes, rods & billets

Machining from billets that are already in stock means no mould and no tooling wait. Do you machine seals yourself? We also supply the semi-finished tubes and rods, made from 100% European-origin raw materials.

Polyurethane billets

Cast polyurethane billets

High-performance cast PU in 94 Shore A and 60 Shore D. Both offer high extrusion and abrasion resistance, and the 94A grade is also hydrolysis resistant. Ideal for lathe cutting rod seals, piston seals, wipers and static seals.

Outer Ø
25–534 mm
Inner Ø
solid to 483 mm
Length
150 mm
PTFE rods and tubes

Moulded PTFE rods & tubes

Standard range in 40% bronze-filled PTFE (extrusion resistant, low friction) and 25% carbon-graphite PTFE (self-lubricating, suits dry running). Other PTFE grades are available on request.

Rods Ø
30–150 mm
Tubes OD
40–230 mm
Length
145 mm
Composite guide materials

Composite materials

Guide rings, guide tapes, tubes and rods in composite materials, used mainly in hydraulics. Phenolic composites are used for guides that carry high loads.

Sizes
On request

Not sure which material you need?

Tell us the pressure, temperature and fluid. An engineer will recommend a grade with your quote.

Ask for a recommendation →