FFKM o-rings and Perfluoroelastomer materials provide the highest temperature (up to 620°F) and most universal chemical resistance of any rubber o-ring and gasket material. FFKM o-rings are utilized in the most demanding applications with dozens of compounds engineered for targeted application performance like low or high temperature, chemical compatibility and industry compliance.
Allorings.com has the world’s largest inventory network of high performance o-rings, including thousands of non-standard sizes that can be custom-made within a few weeks, typically without tooling fees. For high-performance applications, your FFKM o-rings are available and ready to ship today.
FFKM O-Ring Material Comparison Table
FFKM O-Rings are available in a variety of brand names like Kalrez ®, Chemraz ®, Simriz ® and Markez ®. Refer to our FFKM O-Ring material comparison chart to compare relative price and performance properties some of the more popular Perfluoroelastomer FFKM materials.
| Compound Number
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Brand
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Color
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Durometer (Shore A)
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Relative Price
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Typical Inventory Level
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Compare To
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High Temp (° F)
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Low Temp (° F)
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Strong Acids
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Hot Amines
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Steam < 300 °F
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Steam > 550 °F
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Explosive Decompression
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USP Class VI Medical Grade
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FDA Compliant
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Improved Compression Set Resistance
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Plasma Resistance
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Semicon
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Oil and Gas
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Chemical Processing
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Life Sciences
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Paint Spray Solvents
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Aerospace
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Alternative Fuels
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| Z1028 Quote/Order Online Quote or Order Online
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Markez® | Black | 75 |  |
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Kalrez® 6375 Kalrez® 4079 Kalrez® 7075 |
610 (320ºC) | 5 (-15ºC) |  |
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| Data Sheet | Best value general purpose performance, higher temperature resistance, wide chemical compatibility. | |||||||||||||||||||||||
| Z1352 Quote/Order Online Quote or Order Online
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Markez® | Black | 75 |  |
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Kalrez® 6375 Kalrez® 6380 Kalrez® 1050LF |
500 (260ºC) | 5 (-15ºC) | |
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| Data Sheet | General purpose, good in most acids, solvents, improved hot amine and steam resistance with wide range of chemical compatibility. | |||||||||||||||||||||||
| Z1026 Quote/Order Online Quote or Order Online
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Markez® | Black | 75 | |
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Kalrez® 6375 Chemraz® 505 |
480 (250°C) | 5 (-15°C) | |
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| General purpose, good resistance to most paint solvents use in spraying applications. | ||||||||||||||||||||||||
| SZ485 Quote/Order Online Quote or Order Online
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Simriz® | Black | 75 | |
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Markez® Z1028 Markez® Z1026 |
450 (230ºC) | 20 (-5ºC) | |
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| Simriz® SZ485 - General purpose, not for use with steam or strong acids. | ||||||||||||||||||||||||
| Z1416 Quote/Order Online Quote or Order Online
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Markez® | Black | 75 | |
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Kalrez® 6320 Kalrez® LS222 |
610 (320ºC) | -5 (-15ºC) | |
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| FDA compliant, higher temperature resistance, wide chemical compatibility. | ||||||||||||||||||||||||
| Z1400 Quote/Order Online Quote or Order Online
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Markez® | Black | 75 |  |
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Kalrez® 7075 Kalrez® 4079 Kalrez® 8900 |
635 (335ºC) | -5 (-15ºC) | |
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| 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. | ||||||||||||||||||||||||
| Z1401 Quote/Order Online Quote or Order Online
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Markez® | Black | 80 | |
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Chemraz® 615 Kalrez® 4079 |
620 (325ºC) | -20 (-30ºC) | |
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| Wider temperature resistance range, general purpose high temp material. | ||||||||||||||||||||||||
| Z1029 Quote/Order Online Quote or Order Online
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Markez® | White | 75 | |
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Chemraz® 513 Kalrez® 2037 Kalrez® 8575 |
575 (300ºC) | 5 (-15ºC) | |
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| General purpose white, good resistance to oxidation and high temperature exposure. | ||||||||||||||||||||||||
| Z1318 Quote/Order Online Quote or Order Online
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Markez® | White | 75 | |
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Kalrez® 6221 Kalrez® LS205 Chemraz® 625 |
500 (260ºC) | 5 (-15ºC) | |
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| USP Class VI and FDA compliant white FFKM with wide range compatibility. | ||||||||||||||||||||||||
| C505 Quote/Order Online Quote or Order Online
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Chemraz® | Black | 75 | |
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Markez® Z1028 Markez® Z1026 |
450 (230ºC) | -20 (-30ºC) | |
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| Chemraz® C505 - General purpose, not for use with steam or strong acids. | ||||||||||||||||||||||||
| C605 Quote/Order Online Quote or Order Online
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Chemraz® | Black | 80 | |
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Markez® Z1028 | 500 (260ºC) | -5 (-20ºC) | |
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| Chemraz® C605 - General purpose. | ||||||||||||||||||||||||
| Z1321 Quote/Order Online Quote or Order Online
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Markez® | Black | 75 |  |
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Kalrez® 0040 | 480 (250ºC) | -50 (-45ºC) | |
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| Improved low temperature resistance for use in oilfield and gas exploration, wide chemical resistance. | ||||||||||||||||||||||||
| Z1412 Quote/Order Online Quote or Order Online
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Markez® | Black | 90 | |
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Kalrez® 7090 Kalrez® 3018 Chemraz® 510 |
590 (310ºC) | 5 (-15ºC) | |
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| Data Sheet | Higher temperature resistance Norsok M710 AED explosive decompression resistance, excellent resistance to Sour gas and associated chemicals and steam. | |||||||||||||||||||||||
| Z1322 Quote/Order Online Quote or Order Online
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Markez® | Black | 90 | |
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Kalrez® 0040 | 465 (240ºC) | -50 (-45ºC) | |
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| Lower temperature resistance, AED explosive decompression resistance, providing the best overall temp range and Chemical resistance. | ||||||||||||||||||||||||
| K6375 Quote/Order Online Quote or Order Online
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Kalrez® | Black | 75 | |
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Markez® Z1028 | 525 (275ºC) | -5 (-20ºC) | |
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| Kalrez® K6375 - General purpose. | ||||||||||||||||||||||||
| C615 Quote/Order Online Quote or Order Online
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Chemraz® | Black | 80 | |
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Markez® Z1028 Markez® Z1401 |
620 (325ºC) | 0 (-18ºC) | |
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| Chemraz® C615 - Higher temperature resistance general purpose,not for use with steam. | ||||||||||||||||||||||||
| K7075 Quote/Order Online Quote or Order Online
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Kalrez® | Black | 75 |  |
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Markez® Z1028 Markez® Z1401 |
620 (325ºC) | 20 (-5ºC) | |
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| Kalrez® K7075 - Higher temperature resistance general purpose. | ||||||||||||||||||||||||
| K4079 Quote/Order Online Quote or Order Online
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Kalrez® | Black | 75 | |
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Markez® Z1028 Markez® Z1401 |
600 (315ºC) | 20 (-5ºC) | |
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| Kalrez® K4079 - Higher temperature resistance, not for use with steam. | ||||||||||||||||||||||||
| C526 Quote/Order Online Quote or Order Online
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Chemraz® | Black | 95 | |
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Markez® Z1322 | 475 (245ºC) | -5 (-20ºC) | |
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| Chemraz® C526 - Explosive decompression. | ||||||||||||||||||||||||
| Z1403 Quote/Order Online Quote or Order Online
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Markez® | White | 75 | |
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Kalrez® 7275 Kalrez® 8575 Kalrez® 9500 |
600 (315ºC) | -20 (-30ºC) | |
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| Improved plasma resistance, higher purity, wider temperature range, low extractables. | ||||||||||||||||||||||||
| Z1407 Quote/Order Online Quote or Order Online
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Markez® | Clear Amber | 75 | |
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Kalrez® 9100 | 540 (280ºC) | 20 (-10ºC) | |
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| Higher purity clear translucent, semiconductor and laser grade material, excellent plasma resistance. | ||||||||||||||||||||||||
| Z1411 Quote/Order Online Quote or Order Online
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Markez® | Clear Amber | 62 | |
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Kalrez® 8002 | 535 (280ºC) | 5 (-15ºC) | |
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| Higher purity amber tinted clear, same as Markez® Z1407 but lower durometer for lower compression force for delicate applications. | ||||||||||||||||||||||||
| K8575 Quote/Order Online Quote or Order Online
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Kalrez® | White | 62 |  |
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575 (300ºC) | 20 (-5ºC) | |
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| Kalrez® K8575 - High temperature semiconductor processing. | ||||||||||||||||||||||||
| K9100 Quote/Order Online Quote or Order Online
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Kalrez® | White | 74 | |
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575 (300ºC) | 20 (-5ºC) | |
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| Kalrez® K9100 -Higher purity translucent white. | ||||||||||||||||||||||||
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