Viton™ Type XLT (Extreme Low Temperature Fluorocarbon Elastomer)
Viton™ Type XLT is a specialty low-temperature fluorocarbon elastomer engineered to provide exceptional flexibility and sealing performance at extremely low temperatures, while maintaining the chemical resistance and durability expected from FKM materials. Viton™ XLT O-rings, gaskets, and custom molded parts are specifically designed for applications where conventional FKM compounds lose elasticity or sealing force in cold environments.
Viton™ Type XLT O-rings, gaskets, and custom molded parts extend the low-temperature capability of fluorocarbon elastomers beyond standard GLT and GFLT grades, making them ideal for applications exposed to severe cold, rapid temperature cycling, and outdoor or high-altitude conditions. While XLT does not offer the same high-fluorine chemical resistance as some specialty FKM types, its extreme low-temperature performance makes it indispensable in cold-service sealing applications.
The engineers and consultants at Canyon Components specialize in matching sealing materials to real-world operating conditions. Contact our expert staff for assistance selecting the right Viton™ Type XLT compound for your O-rings, gaskets, or custom molded parts.
Common names include: FKM (Fluorocarbon), Extreme Low Temperature FKM
Trade names include: Viton™ XLT, Fluorel®, Technoflon®, Dai-El®
Features of Viton™ Type XLT
- Viton™ Type XLT O-rings, gaskets, and custom molded parts provide exceptional low-temperature flexibility compared to all standard FKM grades
- Viton™ Type XLT O-rings, gaskets, and custom molded parts remain flexible at temperatures as low as -54°F to 437°F (-48°C to 225°C) depending on compound
- Viton™ Type XLT O-rings, gaskets, and custom molded parts maintain reliable sealing force during cold starts and rapid thermal cycling
- Viton™ Type XLT O-rings, gaskets, and custom molded parts exhibit good resistance to fuels, oils, and lubricants
- Viton™ Type XLT O-rings, gaskets, and custom molded parts have low compression set at low temperatures
- Viton™ Type XLT O-rings, gaskets, and custom molded parts are available in multiple formulations to balance flexibility, durability, and cost
Limitations of Viton™ Type XLT
- Viton™ Type XLT O-rings, gaskets, and custom molded parts have lower chemical resistance than high-fluorine FKM grades such as Type ETP
- Viton™ Type XLT O-rings, gaskets, and custom molded parts are not recommended for strong amines, ketones, or highly polar solvents
- Viton™ Type XLT O-rings, gaskets, and custom molded parts have poor resistance to hot water and superheated steam
- Viton™ Type XLT O-rings, gaskets, and custom molded parts typically have a service temperature range of -54°F to 437°F (-48°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 XLT (Viton™ Type XLT) 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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Temperature Search (°C)
Viton™ Type XLT
Viton™ Type XLT is specifically selected for applications where extreme cold performance is the primary requirement, and where standard fluorocarbon elastomers cannot maintain sealing integrity. Its ability to remain flexible at very low temperatures makes it critical in cold-weather, outdoor, and high-altitude systems.
Canyon Components works closely with customers to ensure Viton™ Type XLT is applied correctly, delivering dependable sealing performance even in the harshest cold-service environments.
Automotive Industry
Viton™ Type XLT is used in fuel system O-rings, gaskets, and seals for vehicles operating in extremely cold climates, ensuring reliable cold-start performance.
Oil and Gas Industry
Viton™ Type XLT is applied in surface equipment seals exposed to arctic conditions, cold ambient temperatures, and intermittent hydrocarbon exposure.
Aerospace Industry
Viton™ Type XLT is selected for sealing applications requiring flexibility at high altitudes and during extreme cold-soak conditions.
Industrial Equipment
Viton™ Type XLT is common in compressors, pumps, and hydraulic systems that experience severe cold starts and low ambient temperatures.
Energy and Power Generation
Viton™ Type XLT is utilized in sealing components for outdoor energy infrastructure operating in sub-zero environments.
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 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.
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