Viton™ Type F (High Fluorine, Broad Chemical Resistance Fluorocarbon Elastomer)
Viton™ Type F is a high-fluorine fluorocarbon elastomer engineered to deliver significantly enhanced chemical resistance compared to Viton™ Type A and Type B compounds. By increasing fluorine content and modifying polymer composition, Viton™ Type F O-rings, gaskets, and custom molded parts provide improved compatibility with aggressive fuels, solvents, and a wider range of chemical environments.
Viton™ Type F O-rings, gaskets, and custom molded parts are commonly specified in applications where exposure to aromatic hydrocarbons, aggressive fuels, and chemical blends pushes the limits of standard FKM materials. While not intended for the extreme environments handled by specialty compounds such as Viton™ ETP, Type F offers an excellent balance between chemical resistance, mechanical performance, and cost for demanding industrial sealing applications.
The engineers and consultants at Canyon Components work closely with customers to determine when Viton™ Type F provides the optimal upgrade in chemical resistance without unnecessary complexity or expense. Contact our expert staff for guidance on selecting the appropriate Viton™ Type F compound for your O-rings, gaskets, or custom molded parts.
Common names include: FKM (Fluorocarbon), High Fluorine FKM
Trade names include: Viton™, Fluorel®, Technoflon®, Dai-El®
Features of Viton™ Type F
- Viton™ Type F O-rings, gaskets, and custom molded parts provide enhanced chemical resistance compared to Viton™ Type A and Type B
- Viton™ Type F O-rings, gaskets, and custom molded parts exhibit excellent resistance to fuels, oils, lubricants, and aromatic hydrocarbons
- Viton™ Type F O-rings, gaskets, and custom molded parts offer good resistance to aggressive chemical blends and additives
- Viton™ Type F O-rings, gaskets, and custom molded parts maintain strong mechanical properties and abrasion resistance
- Viton™ Type F O-rings, gaskets, and custom molded parts show excellent resistance to ozone, weathering, and aging
- Viton™ Type F O-rings, gaskets, and custom molded parts are available in multiple formulations to balance chemical resistance, temperature performance, and cost
Limitations of Viton™ Type F
- Viton™ Type F O-rings, gaskets, and custom molded parts have poor resistance to hot water and superheated steam
- Viton™ Type F O-rings, gaskets, and custom molded parts are not recommended for amines, ketones, or strongly polar solvents
- Viton™ Type F O-rings, gaskets, and custom molded parts are not compatible with ammonia gas or low molecular weight organic acids
- Viton™ Type F O-rings, gaskets, and custom molded parts typically have a service temperature range of 0°F to 437°F (-18°C to 225°C), depending on compound and application
Please consult a Canyon Components Engineer about your specific application and we will use our decades of experience to formulate a solution that fits your need.
FKM & Viton™ High Performance Polymer Types
There are many types of FKM Polymer Types that Canyon Components offers.
This includes FKM Types A, B, F, GLT, GFLT, XLT, ULT, ETP, & TBR.
The table below is a Viton™ selection guide that lays out the pluses and minuses of each variation.
Key: 1 = Excellent 2 = Good 3 = Poor 4 = Not Recommended
| Types of FKM | A | GF | GLT | GLT ED | GFLT | XLT | ETP | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Canyon Compound Number | VT75BK00 | VT75BK20 | VT75BK30 | VT90BK31 | VT75BK40 | VT75BK50 | VT75BK60 | |||||||
| Description | General Purpose | General Purpose High Fluorine |
Low Temp | Low Temp Resistant to Explosive Decompression |
Low Temp High Fluorine |
Extreme Low Temp High Fluorine |
Viton® Extreme High Fluorine FEPM |
|||||||
| Cure Type | Bisphenol | Peroxide | Peroxide | Peroxide | Peroxide | Peroxide | Peroxide | |||||||
| Typical Fluorine Content | 66 | 69.5 | 64 | 64 | 66.5 | 66.5 | 67 | |||||||
| Typical High Temp Range °F (°C) | 437 (225) | 437 (225) | 437 (225) | 437 (225) | 437 (225) | 437 (225) | 437 (225) | |||||||
| Typical Low Temp Range °F (°C) | -15 (-26) | -15 (-26) | -40 (-40) | -40 (-40) | -35 (-37) | -54 (-48) | -6 (-21) | |||||||
| TR-10 °F (°C) | 1 (-17) | -6 (-21) | -22 (-30) | -22 (-30) | -11 (-24) | -40 (-40) | 12 (-11) | |||||||
| Oxygenated Automotive Fuels (containing MeOH, EtOH, MTBE, etc.) | 4 | 1 | 4 | 4 | 1 | 1 | 1 | |||||||
| Reciprocating Engine Lubricating Oils (SE-SF Grades) | 2 | 1 | 1 | 1 | 1 | 1 | 1 | |||||||
| Aliphatic Hydrocarbon Process Fluids,Chemicals | 1 | 1 | 1 | 1 | 1 | 1 | 1 | |||||||
| Aromatic Hydrocarbon Process Fluids, | 1 | 1 | 2 | 2 | 1 | 1 | 1 | |||||||
| Aqueous Fluids: Water, Steam, Mineral Acids (H2SO4, HNO3, HCl, etc.) | 3 | 1 | 1 | 1 | 1 | 1 | 1 | |||||||
| Amines, High pH Caustics | 4 | 4 | 4 | 4 | 4 | 4 | 1 |
FKM Type F (Viton™ Type F) Materials Available
This table shows many of our standard materials and links out to our O-ring store. Get in touch with us if you need a custom gasket, custom molded part, or non-standard geometry!
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Industrial Usage of Viton™ Type F
Viton™ Type F is selected for sealing applications that demand broad chemical compatibility beyond standard fluorocarbon elastomers. Its improved resistance to aggressive fuels and solvents makes it particularly valuable in industrial systems where fluid compositions vary or include modern additives.
Canyon Components works with customers to ensure Viton™ Type F is specified appropriately, helping maximize seal life while controlling material and processing costs.
Automotive Industry
Viton™ Type F is used in fuel system O-rings, gaskets, and seals exposed to aggressive fuel blends, additives, and elevated temperatures.
Oil and Gas Industry
Viton™ Type F is applied in seals and gaskets for valves, pumps, and fittings handling hydrocarbons, condensates, and chemically complex fluids.
Chemical Processing
Viton™ Type F is used in O-rings, gaskets, and molded seals exposed to aromatic hydrocarbons, fuels, and non-polar solvents.
Aerospace Industry
Viton™ Type F is selected for fuel and lubricant sealing applications requiring enhanced chemical resistance and long-term durability.
Industrial Equipment
Viton™ Type F is common in compressors, pumps, and fluid-handling systems where resistance to aggressive oils and fuels is required.
Please consult a Canyon Components Engineer about your specific application and we will use our decades of experience to formulate a solution that fits your need.
All Other FKM (Viton™) Types Available
Viton™ Type A – General Purpose FKM
Viton™ Type A FKM O-rings, gaskets, and custom molded parts provide balanced heat and chemical resistance. This general purpose fluorocarbon elastomer is widely used in industrial sealing applications involving fuels, oils, and hydrocarbons.
Viton™ Type B – Improved Chemical Resistance FKM
Viton™ Type B FKM offers enhanced resistance to aggressive fuels, aromatics, and chemical blends compared to Type A. This high-fluorine fluorocarbon elastomer is commonly specified in demanding fuel systems.
Viton™ Type GF – High Fluorine FKM
Viton™ Type GF FKM features increased fluorine content for improved resistance to fuels, biodiesel, and harsh chemicals while maintaining strong mechanical properties and sealing reliability.
Viton™ Type GLT – Low Temperature FKM
Viton™ Type GLT FKM delivers improved low-temperature flexibility compared to standard fluorocarbon elastomers, supporting sealing performance in colder climates without sacrificing chemical resistance.
Viton™ Type GFLT – Low Temperature and Chemical Resistant FKM
Viton™ Type GFLT FKM combines enhanced low-temperature flexibility with improved resistance to aggressive fuels and chemical blends, making it suitable for demanding fluorocarbon sealing applications.
Viton™ Type ETP – Specialty Chemical Resistant FKM
Viton™ Type ETP FKM provides exceptional resistance to aggressive chemicals, steam, and amines. This specialty fluorocarbon elastomer is often used in oil, gas, and chemical processing systems.
Viton™ Type ULT – Ultra Low Temperature FKM
Viton™ Type ULT FKM is engineered for ultra-low temperature environments while maintaining fluorocarbon chemical resistance, making it suitable for extreme cold industrial and aerospace sealing systems.
Viton™ Type XLT – Extreme Low Temperature FKM
Viton™ Type XLT FKM extends low-temperature sealing capability beyond GLT grades, offering reliable fluorocarbon elastomer performance in severe cold and aerospace environments.
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