FITCO manufactures O-rings and sealing cords across NBR, FKM (plus individual Viton A/B/F/GLT-GFLT/AED grades), FFKM, EPDM, HNBR, Silicone, Fluorosilicone, AFLAS, Neoprene and the Viton Extreme series (ETP/GBL/TBR) — each suited to a different chemical and temperature envelope.
General-purpose seal for mineral oils, fuels and hydraulic fluids.
Full material profile → -20°C to +200°C · $$$High-temperature, chemical-resistant sealing for oil & gas and process industries.
Full material profile → -15°C to +327°C · $$$$Near-universal chemical resistance for the most demanding process seals.
Full material profile → -40°C to +150°C · $$Water, steam and weather-resistant sealing — the wrong choice for mineral oil.
Full material profile → -30°C to +150°C · $$$Higher heat and abrasion resistance than standard NBR for demanding drives.
Full material profile → -60°C to +230°C · $$Food-, medical- and electrically-safe sealing across a wide temperature band.
Full material profile → -60°C to +200°C · $$$Silicone's temperature range with added fuel and oil resistance standard silicone doesn't have.
Full material profile → -10°C to +230°C · $$$$Extreme chemical + heat resistance for sour gas and amine service beyond standard FKM.
Full material profile → -20°C to +200°C · $$$General-purpose FKM dipolymer, 66% fluorine — the baseline Viton grade for standard petroleum and fuel contact.
Full material profile → -20°C to +200°C · $$$Terpolymer with ~68% fluorine — enhanced resistance to inorganic acids, caustics and harsh industrial fluids.
Full material profile → -15°C to +200°C · $$$High-fluorine terpolymer (~70%) engineered for oxygenated automotive fuels and alternative fuel blends.
Full material profile → -40°C to +200°C · $$$$Low-temperature specialist grades — cold flexibility down to -40°C without giving up FKM's fluid resistance.
Full material profile → -20°C to +200°C · $$$$High-hardness FKM engineered to prevent Anti-Explosive/Rapid Gas Decompression failures in high-pressure systems.
Full material profile → -20°C to +230°C · $$$$The core Viton Extreme terpolymer — amine and high-pH chemical resistance beyond standard FKM.
Full material profile → -20°C to +230°C · $$$$Peroxide-cured Viton Extreme with added steam and acid resistance.
Full material profile → -20°C to +230°C · $$$$The broadest base-resistance Viton Extreme formulation, for multi-chemical process exposure.
Full material profile → -40°C to +120°C · $General-purpose weather- and ozone-resistant rubber with moderate oil resistance.
Full material profile →| Material | Temperature Range | Hardness | Relative Cost | Best For |
|---|---|---|---|---|
| NBR — Nitrile | -30°C to +100°C | 40–90 Shore A | $ | Hydraulic cylinders and pumps |
| FKM — Fluoroelastomer (Viton-type) | -20°C to +200°C | 60–90 Shore A | $$$ | Oil & gas wellhead and valve seals |
| FFKM — Perfluoroelastomer | -15°C to +327°C | 70–90 Shore A | $$$$ | Semiconductor process chambers |
| EPDM | -40°C to +150°C | 40–90 Shore A | $$ | Potable water & steam systems |
| HNBR — Hydrogenated Nitrile | -30°C to +150°C | 50–90 Shore A | $$$ | High-pressure hydraulic pumps |
| Silicone (VMQ) | -60°C to +230°C | 30–80 Shore A | $$ | Food & beverage processing (FDA grades) |
| Fluorosilicone (FVMQ) | -60°C to +200°C | 70 Shore A | $$$ | Aerospace and ground equipment fuel-system seals |
| AFLAS (FEPM) | -10°C to +230°C | 70–90 Shore A | $$$$ | Amine and sour-gas service in oil & gas production |
| Viton™ A | -20°C to +200°C | 60–90 Shore A | $$$ | Baseline industrial O-rings and gaskets |
| Viton™ B | -20°C to +200°C | 60–90 Shore A | $$$ | Industrial process seals with acid/caustic exposure |
| Viton™ F | -15°C to +200°C | 60–90 Shore A | $$$ | Oxygenated and ethanol-blended fuel system seals |
| Viton™ GLT / GFLT | -40°C to +200°C | 60–90 Shore A | $$$$ | Cold-climate oil & gas wellhead and valve seals |
| Viton™ AED | -20°C to +200°C | 85–95 Shore A | $$$$ | Subsea and wellhead high-pressure gas seals |
| Viton Extreme — ETP Series | -20°C to +230°C | 70–90 Shore A | $$$$ | Amine and caustic process chemical seals |
| Viton Extreme — GBL Series | -20°C to +230°C | 70–90 Shore A | $$$$ | Combined amine exposure and steam cycling seals |
| Viton Extreme — TBR Series | -20°C to +230°C | 70–90 Shore A | $$$$ | Multi-chemical process seals with varying base exposure |
| Neoprene (CR) | -40°C to +120°C | 40–90 Shore A | $ | Outdoor gaskets and weatherproofing seals |
Want oil-swell data and a full temperature chart side-by-side? See the Temperature & Oil Resistance Comparison Chart →
