Markez® FFKM

An Advanced Material for Chemically Resistant, High Pressure & High Temperature O-Rings

Markez high temperature o-rings material

Markez is a high performance perfluoroelastomer (FFKM) o-ring material that offers unmatched value for demanding sealing applications. Produced from nearly identical ingredients as higher priced brands, Markez compounds are used for high temperature o-rings, high pressure o-rings, and chemically resistant o-rings that deliver similar performance to major FFKM brands, with temperature resistance up to 625ºF, at a significantly lower cost. Our proprietary processing allows us to supply seals under an inch in size more efficiently. Introduced exclusively to existing customers more than 15 years ago, we now have the experience and capacity to offer Markez high temperature o-rings and high pressure o-rings to the world.

Markez compound #Z1028 is our most popular general purpose FFKM due to its relatively low cost and broad range of chemical and temperature resistance up to 610ºF (320ºC). Popular sizes are available in stock with rush manufacturing options available. Used as an effective alternative to Kalrez® 6375, 4079, and 7075 in countless applications across various industries like petro-chem, paint, and ink where resistance to harsh solvents is required.

We welcome the opportunity to assist you in selecting the compound that provides the best value for your application. Our expert FFKM material engineers look forward to presenting the test data examples of why Markez offers the best value in the industry. Our Markez product line manager has more than 25 years of experience, including production and application engineering supporting worldwide brands to determine the best value product to perform in demanding applications. Please contact us to assist in selecting the best material for the job.

Explore Markez Compatibility, Compound Options, and More | Buy High Temperature O-Rings Online

Don't see what you need? Please contact an FFKM application engineer for assistance in selecting the compound that provides the best combination of performance and price for your specific application.

Compound
Number
Color
Durometer
(Shore A)
Relative Price
Typical Inventory Level
Compare To
High
Temp
(°F)
Low
Temp
(°F)
Strong
Acids
Hot
Amines
Steam
< 300°F
Steam
> 550°F
Explosive Decom-
pression
USP Class VI Medical Grade
FDA Compliant
Improved Compression Set Resistance
Plasma Resistance
Semicon
Oil and Gas
Chemical Processing
Life Sciences
Paint Spray Solvents
Aerospace
Alternative Fuels
Z1028 Black 75 O-Ring PricesO-Ring PricesKalrez® 6375
Kalrez® 4079
Kalrez® 7075
610 (320ºC) 5 (-15ºC) O-Ring PricesO-Ring PricesO-Ring PricesO-Ring PricesO-Ring PricesO-Ring PricesO-Ring Prices
Best value general purpose performance, higher temperature resistance, wide chemical compatibility.
Z1703 Black 75 O-Ring PricesO-Ring PricesKalrez® 6375
Kalrez® 6230
Kalrez® LS205
525 (274ºC) 5 (-15ºC) O-Ring PricesO-Ring PricesO-Ring PricesO-Ring PricesO-Ring PricesO-Ring PricesO-Ring PricesO-Ring PricesO-Ring PricesO-Ring PricesO-Ring PricesO-Ring PricesO-Ring PricesO-Ring Prices
Low cost performance value, nearly universal chemical compatibility, acid, amines, solvents, compression set resistance, FDA compliant and USP Class VI medical grade.
Z1352 Black 75 O-Ring PricesO-Ring PricesKalrez® 6375
Kalrez® 6380
Kalrez® 1050LF
500 (260ºC) 5 (-15ºC) O-Ring PricesO-Ring PricesO-Ring PricesO-Ring PricesO-Ring PricesO-Ring PricesO-Ring Prices
General purpose, good in most acids, solvents, improved hot amine and steam resistance with wide range of chemical compatibility.
Z1026 Black 75 O-Ring PricesO-Ring PricesKalrez® 6375
Chemraz® 505
480 (250ºC) 5 (-15ºC) O-Ring PricesO-Ring PricesO-Ring Prices
General purpose, good resistance to most paint solvents use in spraying applications.
Z1416 Black 75 O-Ring PricesO-Ring PricesKalrez® 6230
Kalrez® LS222
610 (320ºC) -5 (-15ºC) O-Ring PricesO-Ring PricesO-Ring PricesO-Ring PricesO-Ring PricesO-Ring PricesO-Ring PricesO-Ring PricesO-Ring PricesO-Ring PricesO-Ring PricesO-Ring Prices
FDA compliant, higher temperature resistance, wide chemical compatibility.
Z1400 Black 75 O-Ring PricesO-Ring PricesKalrez® 7075
Kalrez® 4079
Kalrez® 8900
635 (335ºC) -5 (-15ºC) O-Ring PricesO-Ring PricesO-Ring PricesO-Ring PricesO-Ring PricesO-Ring PricesO-Ring PricesO-Ring PricesO-Ring PricesO-Ring PricesO-Ring Prices
Highest temperature FFKM with best long term compression set resistance up to 335ºC, short exposures up to 350ºC, Low outgassing,high purity Wide range of chemical resistance, acid, solvent resistance.
Z2001 Black 80 O-Ring PricesO-Ring PricesKalrez® 7375
Kalrez® 6375
Kalrez® 0040
610 (320ºC) 5 (-15ºC)O-Ring PricesO-Ring PricesO-Ring PricesO-Ring PricesO-Ring PricesO-Ring PricesO-Ring PricesO-Ring PricesO-Ring PricesO-Ring PricesO-Ring PricesO-Ring PricesO-Ring PricesO-Ring PricesO-Ring PricesO-Ring Prices
Ultimate nearly universal chemical compatibility, higher temperature steam resistance, acid, amines, solvents, compresion set resistance, high pressure AED rapid decompression NACE TM0297-2002, FDA and USP medical grade.
Z1401 Black 80 O-Ring PricesO-Ring PricesChemraz® 615
Kalrez® 4079
620 (325ºC) -20 (-30ºC) O-Ring PricesO-Ring Prices
Wider temperature resistance range, general purpose high temp material.
Z1029 White 75 O-Ring PricesO-Ring PricesChemraz® 513
Kalrez® 2037
Kalrez® 8575
575 (300ºC) 5 (-15ºC) O-Ring PricesO-Ring PricesO-Ring Prices
General purpose white, good resistance to oxidation and high temperature exposure.
Z1318 White 75 O-Ring PricesO-Ring PricesKalrez® 6221
Kalrez® LS205
Chemraz® 625
500 (260ºC) 5 (-15ºC) O-Ring PricesO-Ring PricesO-Ring Prices
USP Class VI and FDA compliant white FFKM with wide range compatibility.
Z1321 Black 75 O-Ring PricesO-Ring PricesKalrez® 0040 480 (250ºC) -50 (-45ºC) O-Ring PricesO-Ring PricesO-Ring PricesO-Ring PricesO-Ring PricesO-Ring PricesO-Ring Prices
Improved low temperature resistance for use in oilfield and gas exploration, wide chemical resistance.
Z1412 Black 90 O-Ring PricesO-Ring PricesKalrez® 7090
Kalrez® 3018
Chemraz® 510
590 (310ºC) 5 (-15ºC) O-Ring PricesO-Ring PricesO-Ring PricesO-Ring PricesO-Ring PricesO-Ring Prices
Higher temperature resistance Norsok M710 AED explosive decompression resistance, excellent resistance to Sour gas and associated chemicals and steam.
Z1322 Black 90 O-Ring PricesO-Ring PricesKalrez® 0040 465 (240ºC) -50 (-45ºC) O-Ring PricesO-Ring PricesO-Ring PricesRed Square Mark IconO-Ring PricesO-Ring Prices
Lower temperature resistance, AED explosive decompression resistance, providing the best overall temp range and Chemical resistance.
Z1403 White 75 request a quoteO-rings quote priceKalrez® 7275
Kalrez® 8575
Kalrez® 9500
600 (315ºC) -20 (-30ºC) O-Ring PricesO-Ring PricesO-Ring Prices
Improved plasma resistance, higher purity, wider temperature range, low extractables.
Z1407 Clear Amber 75 O-Ring PricesO-Ring PricesKalrez® 9100 540 (280ºC) 20 (-10ºC) O-Ring PricesO-Ring PricesO-Ring Prices
Higher purity clear translucent, semiconductor and laser grade material, excellent plasma resistance.
Z1411 Clear Amber 62 O-Ring PricesO-Ring PricesKalrez® 8002 535 (280ºC) 5 (-15ºC) O-Ring PricesO-Ring PricesO-Ring Prices
Higher purity amber tinted clear, same as Markez Z1407 but lower durometer for lower compression force for delicate applications.

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The information above is to the best of our knowledge accurate and reliable. However, Marco Rubber makes no warranty, expressed or implied, that parts manufactured from this material will perform satisfactorily in the customer’s application. It’s the customer’s responsibility to evaluate parts prior to use.

Don't see what you need? Please contact an FFKM application engineer for assistance in selecting the compound that provides the best combination of performance and price for your specific application.

Additional Markez High Temperature O-Rings Material Information

Common Names: Perfluoroelastomers, FFKM

FFKM Dupont® Kalrez®, Markez®, Chemraz®, Perlast®, Isolast®, Parofluor®, Perfluorelastomer
Trade Names: Chemraz®, Kalrez®, Markez®, Isolast®, Parofluor® , Perlast®.

General Description: Perfluoroelastomer (FFKM) is a highly fluorinated elastomeric family of compounds that provide the most resistance to chemicals and high temperature than any other elastomer in the market. FFKMs are considered the elastomeric equivalence to PTFE (Teflon) due to its excellent chemical and temperature resistance. Features:
  • Excellent chemical resistance to most chemicals.
  • The highest temperature resistant elastomeric material in the market.
  • Can be molded into o-rings, X-rings and a wide variety of custom shapes.
  • Available in many different compound and colors targeted for specific applications and markets
  • Compounds available to meet FDA, USP Class VI and Explosive Decompression Resistance requirements.
Limitations:
  • Molten alkali metals
  • Dynamic applications
Temperature resistance:
  • -46o to 327o C (-51o to 620o F). Depends on compound and application.