FFKM O-Ring Guide for Chemical Processing and Storage
Learn About Materials Available for Semiconductor Grade O-Rings
We are experienced with the demanding applications found in the chemical processing and storage industry.
Selecting the best material or seal design can increase service life and predictability,
and reduce contamination, resulting in higher efficiency.
Chemical Processing and Storage
Chemical processing industry requires high performance sealing materials that offer excellent chemical resistance to various aggressive media. The diverse range of markets within this industry, including petrochemical and pharmaceutical, demand outstanding chemical sealing performance, reliability and increased service life, which in turn extends preventative maintenance cycles of mechanical seals.
Markez® Perfluoroelastomers provide the highest level of thermal and chemical resistance available, making them ideal for use in the most demanding chemical sealing applications. Compare price and performance to Kalrez®.
Marco Rubber can provide superior chemical sealing solutions for pumps, valves, mechanical seals, pipe couplings and reactors, which meet or exceed your requirements. To meet demanding chemical sealing applications, Marco Rubber seals are molded in a range of high specification materials capable of withstanding extreme temperatures and harsh chemical.
Need a custom product design or custom material formulation to improve performance in a specific application to separate yourself from the competition?
Let us prove how responsive our product and application engineers are and that our custom products and custom materials often cost less than our competitors standards.
- O-rings
- X-rings
- v-rings and Packings
- Custom Gaskets
- Back-up rings
- PTFE seals and O-rings
- SES spring energized seals
- Cap Seals
- Wear rings and Bushings
- Markez® Perfluoroelastomers
- Viton® Extreme (ETP)
- Aflas®
- EPDM
- FKM
- Fluorosilicone
FFKM Compatibility Extreme Chemical Resistant Markez® Materials and Order O-rings Online from a FFKM O-Ring Expert
| Compound Number | Color | Duro (A) | Price | Typical Inventory Level | Compare To | High Temp (°F) | Low Temp (°F) | Strong Acids | Hot Amines | Steam < 300 °F | Steam > 550 °F | Strong Oxidizers | Dry Heat |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Black | 75 |  |  | Kalrez® 6375 Kalrez® 4079 Kalrez® 7075 | 610 (320ºC) | 5 (-15ºC) |  | | |||||
| Best value general purpose performance, higher temperature resistance, wide chemical compatibility. | |||||||||||||
| Black | 75 | |  | Kalrez® 6375 Kalrez® 6380 Kalrez® 1050LF | 500 (260ºC) | 5 (-15ºC) | | | | ||||
| General purpose, good in most acids, solvents, improved hot amine and steam resistance with wide range of chemical compatibility. | |||||||||||||
| Black | 75 | | | Kalrez® 6375 Chemraz® 505 | 480 (250ºC) | 5 (-15ºC) | | ||||||
| General purpose, good resistance to most paint solvents use in spraying applications. | |||||||||||||
| Black | 75 | |  | Kalrez® 6230 Kalrez® LS222 | 610 (320ºC) | -5 (-15ºC) | | | |||||
| FDA compliant, higher temperature resistance, wide chemical compatibility. | |||||||||||||
| Black | 75 |  | | Kalrez® 7075 Kalrez® 4079 Kalrez® 8900 | 635 (335ºC) | -5 (-15ºC) | | | |||||
| Highest temperature FFKM with best long term compression set resistance up to 335ºC, short exposures up to 350ºC, Low sticking force, semicon metallic clean, low outgassing, wide range of chemical acid, solvent resistance, FDA compliant. | |||||||||||||
| Black | 80 | | | Kalrez® 7375 Kalrez® 6375 Kalrez® 6380 | 610 (320ºC) | -0 (-18ºC) | | | | | |||
| Ultimate chemical, steam, acid, amines, solvents, compresion set resistance, wide range of chemical resistance, AED rapid decompression NACE TM0297-2002. | |||||||||||||
| Black | 90 |  | | Kalrez® 7090 Kalrez® 3018 Chemraz® 510 | 590 (310ºC) | 5 (-15ºC) | | | | ||||
| Higher temperature resistance Norsok M710 AED explosive decompression resistance, excellent resistance to Sour gas and associated chemicals and steam. | |||||||||||||
| White | 75 | | | Kalrez® 7275 Kalrez® 8575 Kalrez® 9500 | 600 (315ºC) | -20 (-30ºC) | | ||||||
| Improved plasma resistance, higher purity, wider temperature range, low extractables. | |||||||||||||
| Black | 75 | | | Kalrez® 0040 | 480 (250ºC) | -50 (-45ºC) | | | |||||
| Improved low temperature resistance for use in oilfield and gas exploration, wide chemical resistance. | |||||||||||||
| Black | 90 | | | Kalrez® 0040 | 465 (240ºC) | -50 (-45ºC) | | | | ||||
| Lower temperature resistance, AED explosive decompression resistance, providing the best overall temp range and Chemical resistance. | |||||||||||||
FKM Type Comparison Chart
FKM Viton ® Type | A | B | F | GF | GLT | GFLT | XLT | ULT | ETP | Aflas ® | BRFKM |
|---|---|---|---|---|---|---|---|---|---|---|---|
Marco Commodity Compound number | V1000 | V1032 | V1088 | V1081 | V1038 | V1033 | V1086 | V1166 | V1020 | L1000 | L1010 |
| Relative Pricing |  | | | | | | | | | | |
| Availability |  |  | |  | | |  | |  | | |
H2S % | 2 | 5 | 5 | 5 | 5 | 5 | 10 | 10 | 5 | 20 | 40 |
High Temperature Performance F° (C°) | 437 (225) | 437 (225) | 437 (225) | 437 (225) | 437 (225) | 437 (225) | 437 (225) | 437 (225) | 437 (225) | 450 (232) | 450 (232) |
Low Temperature Performance F° (C°) | -15 (-26) | -11 (-24) | 1 (-17) | 3 (-16) | -40 (-40) | -29 (-34) | -54 (-48) | -65 (-54) | -6 (-21) | 25 (-4) | 1 (-17) |
| TR-10 Low Temperature Flexibility F° (C°) | 1 (-17) | 7 (-14) | 20 (-7) | 21 (-6) | -22 (-30) | -11 (-24) | -40 (-40) | -49 (-45) | 12 (-11) | 37 (3) | 20 (-7) |
| Strong Base, high pH, Caustic, Amines |  | | | | | | | |  | | |
| Low Molecular Weight Carbonyls 100% concentration (MTBB, MBK, MIBK, etc.) | | | | | | | | | | | |
| Engine Lubricating Oil, SG and SH | | | |  | | | | | | | |
| Aqueous fluids, steam, mineral acids (H2So4, HNO2) | | | | | | | | | | | |
| Aromatic Hydrocarbons (toluene, etc.) | | | | | | | | | | | |
| Automotive Fuels Oxygenated with MEOH, ETOH, MTBE, etc. | | | | | | | | | | | |
| Engine Lubricating Oil, SE and SF | | | | | | | | | | | |
| Resistance to Compression Set | | | | | | | | | | | |
| Automotive and Most Aviation Fuels | | | | | | | | | | | |
| Rating Scale: | | = Excellent | | = Good | | = Not Recommended |
