Viton™ Type B (High Fluorine Fluorocarbon Elastomer)
Viton™ Type B is a higher fluorine-content fluorocarbon elastomer developed to provide improved chemical resistance compared to standard Viton™ Type A compounds. By increasing the fluorine level in the polymer backbone, Viton™ Type B O-rings, gaskets, and custom molded parts offer enhanced resistance to fuels, oils, and aggressive hydrocarbons while maintaining strong mechanical performance.
Viton™ Type B O-rings, gaskets, and custom molded parts are widely used in applications where standard FKM materials approach their chemical resistance limits but where extreme specialty compounds such as Viton™ ETP are not required. This makes Type B an excellent middle-ground material for demanding sealing environments that require greater fluid resistance without significant cost escalation.
The engineers and consultants at Canyon Components work closely with customers to determine when Viton™ Type B is the optimal balance of performance and value. Contact our expert staff for assistance selecting the right Viton™ Type B compound for your sealing application.
Common names include: FKM (Fluorocarbon), High Fluorine FKM
Trade names include: Viton™, Fluorel®, Technoflon®, Dai-El®
Features of Viton™ Type B
- Viton™ Type B O-rings, gaskets, and custom molded parts offer improved chemical resistance compared to Viton™ Type A
- Viton™ Type B O-rings, gaskets, and custom molded parts exhibit excellent resistance to fuels, oils, lubricants, and hydrocarbon-based fluids
- Viton™ Type B O-rings, gaskets, and custom molded parts provide good mechanical strength and abrasion resistance
- Viton™ Type B O-rings, gaskets, and custom molded parts have excellent resistance to ozone, weathering, and aging
- Viton™ Type B O-rings, gaskets, and custom molded parts exhibit low gas permeability
- Viton™ Type B O-rings, gaskets, and custom molded parts are available in multiple compounds to balance chemical resistance, temperature performance, and cost
Limitations of Viton™ Type B
- Viton™ Type B O-rings, gaskets, and custom molded parts have poor resistance to hot water and superheated steam
- Viton™ Type B O-rings, gaskets, and custom molded parts are not recommended for amines, ketones, or polar solvents
- Viton™ Type B O-rings, gaskets, and custom molded parts are not compatible with ammonia gas or low molecular weight organic acids
- Viton™ Type B O-rings, gaskets, and custom molded parts typically have a service temperature range of -11°F to 437°F (-24°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 B (Viton™ Type B) 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 B
Viton™ Type B is commonly selected when applications demand greater chemical resistance than standard FKM but do not require the extreme performance of specialized fluorocarbon chemistries. It is especially valuable in systems exposed to aggressive fuels, lubricants, and hydrocarbon mixtures.
Canyon Components partners with customers to ensure Viton™ Type B is specified correctly, maximizing seal life while maintaining cost efficiency.
Automotive Industry
Viton™ Type B is used in fuel system O-rings, gaskets, and seals exposed to modern fuels, additives, and higher operating temperatures.
Oil and Gas Industry
Viton™ Type B is applied in seals and gaskets for valves, pumps, and fittings handling hydrocarbons and lubricants under pressure.
Aerospace Industry
Viton™ Type B is selected for fuel and lubricant sealing applications requiring improved chemical resistance and environmental durability.
Chemical Processing
Viton™ Type B is used in sealing components exposed to non-polar solvents, fuels, and oils where Type A performance may be insufficient.
Industrial Equipment
Viton™ Type B is common in compressors, pumps, and fluid-handling systems where enhanced resistance to 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 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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