FKM O-Rings Selection Guide
FKM o-rings, also known as Viton® o-rings, boast exceptional chemical compatibility and high temperature resistance up to 400°F. With hundreds of specialty compounds available for specific applications, FKM is an excellent o-ring material choice for various industries.
Marco Rubber utilizes the world's largest inventory network of FKM o-rings, ensuring faster responses and shorter lead times. We also offer metric FKM o-rings and custom sizes without tooling fees.
Due to their superior chemical resistance and high temperature performance compared to other basic materials, FKM o-rings are extensively used in chemical, automotive, aerospace, and industrial applications.
With Marco's vast inventory, direct purchasing power, and responsive service, we're your one-stop solution for all FKM or Viton® o-ring needs.
FKM Compatibility
Marco carries a wide range of FKM material, including types A, B, F, GLT, GFLT, XLT, ULT, ETP, TBR.
| FKM Viton® Type (Marco Compound) | A (V1000) | B (V1032) | F (V1088) | GF (V1081) | GLT (V1038) | GFLT (V1033) | XLT (V1086) | ULT (V1166) | ETP (V1020) | AFLAS® (L1000) | BRFKM (L1010) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Relative Pricing | $ | $$ | $$ | $$ | $$ | $$$ | $$$$ | $$$$$ | $$$$$ | $$ | $$ |
| Availability | High | Low | Low | Medium | Medium | Medium | Medium | Medium | High | High | Medium |
| H2S % | 2 | 5 | 5 | 5 | 5 | 5 | 10 | 10 | 5 | 20 | 40 |
| High Temp 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 Temp 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 Temp Performance 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) | | | | | | | | | | | |
= Excellent = Good = Not Recommended FKM O-Rings Material Compound Comparison
Marco has hundreds of other specialty FKM compounds available. Contact a Marco Sales Consultant or Engineer for more information.
| Compound # | Datasheet | Hardness (Shore A) | Color | Low Temp °F (°C) | High Temp °F (°C) | Features |
|---|---|---|---|---|---|---|
V1000 |  | 75 | Black | -15 (-26) | 437 (225) | General purpose, low cost & high inventory FKM |
V1002 | | 75 | Black | -15 (-26) | 437 (225) | AMS-R-83248 M83248/1-### PER MIL-R-83248 TY-1 CL-1, available in a UL recognized grade, compare to Parker V0747-75 |
V1003 | | 75 | Brown | -15 (-26) | 437 (225) | Brown FKM Viton, improved oxidation resistance, compare to Parker V884-75 |
V1004 | | 90 | Black | -15 (-26) | 437 (225) | M83248/2-### PER MIL-R-83248C TY 1 CL 2, compare to Parker V0709-90 |
V1005 | | 75 | Black | -40 (-40) | 437 (225) | M83485/1-XXX PER MIL-R-83485 GLT-type FKM Improved low temp resistance, compare to Parker VM835-75 |
V1007 | | 90 | Black | -15 (-26) | 437 (225) | General purpose high durometer, good in high pressure and dynamic applications, compare to Parker VA153-90 |
V1009 | | 50 | Black | -15 (-26) | 437 (225) | General purpose softer FKM, compare to Parker V0986-50 |
V1010 | | 60 | Black | -15 (-26) | 437 (225) | General purpose softer FKM, compare to Parker V0769-60 and Parco 9009-60 |
The information on this page 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.
The temperature ranges presented on this page are approximations for dry air service only and should not be used to determine design specifications or end-use temperature limits. Actual temperature range of a compound in an end-use application is highly dependent on part type, hardware configuration, applied forces, chemical media, pressure and thermal cycling effects, and other factors. The most practical way of determining an end-use temperature range is testing in the actual application conditions. Consult a Marco Engineer for more details.
