Viton™ Type A (Standard FKM Fluorocarbon Elastomer)
Viton™ Type A is the most widely used fluorocarbon elastomer and serves as the baseline material for many FKM O-rings, gaskets, and custom molded parts. It provides an excellent balance of chemical resistance, mechanical properties, and temperature performance, making it a go-to choice for a broad range of industrial sealing applications.
Viton™ Type A O-rings, gaskets, and custom molded parts exhibit strong resistance to fuels, oils, lubricants, ozone, weathering, and many chemicals commonly encountered in automotive, aerospace, oil and gas, and general industrial systems. While it does not offer the extended low-temperature performance of specialty grades like Viton™ GLT or the extreme chemical resistance of Viton™ ETP, Viton™ Type A delivers reliable, cost-effective sealing performance across a wide operating range.
The engineers and consultants at Canyon Components take pride in helping customers select the optimal sealing material for their application. Contact our expert staff for assistance with Viton™ Type A O-rings, gaskets, or custom molded parts.
Common names include: FKM (Fluorocarbon), Fluorocarbon Rubber
Trade names include: Viton™, Fluorel®, Technoflon®, Dai-El®
Features of Viton™ Type A
- Viton™ Type A O-rings, gaskets, and custom molded parts provide excellent resistance to fuels, oils, greases, and petroleum-based fluids
- Viton™ Type A O-rings, gaskets, and custom molded parts exhibit strong mechanical properties and abrasion resistance
- Viton™ Type A O-rings, gaskets, and custom molded parts offer excellent resistance to ozone, weathering, and aging
- Viton™ Type A O-rings, gaskets, and custom molded parts have low gas permeability compared to many other elastomers
- Viton™ Type A O-rings, gaskets, and custom molded parts maintain reliable sealing performance across a wide temperature range
- Viton™ Type A O-rings, gaskets, and custom molded parts are available in a wide range of compounds to meet performance and cost requirements
Limitations of Viton™ Type A
- Viton™ Type A O-rings, gaskets, and custom molded parts have poor resistance to hot water and superheated steam
- Viton™ Type A O-rings, gaskets, and custom molded parts are not recommended for amines, ketones, or polar solvents
- Viton™ Type A O-rings, gaskets, and custom molded parts are not compatible with ammonia gas or low molecular weight organic acids
- Viton™ Type A O-rings, gaskets, and custom molded parts typically have a service temperature range of -15°F to 437°F (-26°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 A (Viton™ Type A) 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 A
Viton™ Type A is considered the standard fluorocarbon elastomer for many sealing applications and is often the first material evaluated when chemical resistance and temperature capability are required. Its balance of performance and availability makes it suitable for a wide range of industries where aggressive fluids and elevated temperatures are present.
Canyon Components works closely with customers to ensure Viton™ Type A is applied appropriately, both technically and economically, for long-term sealing reliability.
Automotive Industry
Viton™ Type A is used extensively in fuel system O-rings, gaskets, and seals for fuel rails, injectors, pumps, and emission control components.
Oil and Gas Industry
Viton™ Type A is applied in O-rings and gaskets for valves, fittings, and pumps exposed to hydrocarbons, lubricants, and elevated temperatures.
Chemical Processing
Viton™ Type A is used in seals and gaskets where resistance to oils, fuels, and non-polar chemicals is required.
Aerospace Industry
Viton™ Type A is employed in sealing applications requiring resistance to fuels, lubricants, and environmental exposure.
Industrial Equipment
Viton™ Type A is common in compressors, hydraulic systems, and general machinery where chemical resistance and durability are critical.
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 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 F – Improved Chemical Resistance FKM
Viton™ Type F FKM provides superior resistance to oxygenated fuels, solvents, and aggressive chemical environments. This fluorocarbon elastomer is frequently used in automotive and industrial fuel sealing applications.
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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