MIL-Spec Viton™ for the Military and Aerospace Industry
Viton™ (FKM) fluorocarbon elastomers are widely used in the military and aerospace industry for manufacturing O-rings, gaskets, seals, and custom molded parts that must perform reliably under extreme temperatures, aggressive fuels, hydraulic fluids, altitude changes, vibration, and long service lifecycles. Military and aerospace applications demand materials that offer predictable performance, traceability, and compliance with strict specifications and qualification requirements.
MIL-Spec Viton™ O-rings, gaskets, and custom molded parts are commonly specified for aircraft fuel systems, hydraulic systems, actuation systems, environmental control systems, missile hardware, and defense ground equipment. These materials provide excellent resistance to aviation fuels, oils, lubricants, and many solvents, while maintaining sealing integrity across wide temperature and pressure ranges.
Canyon Components supports defense contractors and aerospace OEMs with Viton™ compounds engineered to meet MIL-specification requirements, including controlled formulations, documentation, and batch traceability. Contact our expert staff for assistance selecting MIL-Spec Viton™ O-rings, gaskets, and custom molded parts for mission-critical applications.
Common names include: FKM (Fluorocarbon), Fluorocarbon Rubber
Trade names include: Viton™, Fluorel®, Technoflon®, Dai-El®
Features of MIL-Spec Viton™ in Military and Aerospace Applications
- MIL-Spec Viton™ O-rings, gaskets, and custom molded parts provide excellent resistance to aviation fuels, hydraulic fluids, and lubricants
- Viton™ materials maintain stable mechanical properties under altitude changes and pressure cycling
- Viton™ O-rings and gaskets exhibit low compression set for long-term sealing reliability
- Viton™ compounds offer excellent resistance to ozone, weathering, and aging
- Viton™ materials perform well in high-temperature aerospace environments
- MIL-Spec Viton™ compounds are available with full material traceability and documentation
Limitations of MIL-Spec Viton™
- Viton™ O-rings, gaskets, and custom molded parts have poor resistance to hot water and superheated steam
- Viton™ materials are not recommended for strong amines, ketones, or highly polar solvents unless specialty grades are used
- Viton™ compounds are not compatible with ammonia gas or strong inorganic bases
- Viton™ service temperature range varies by compound, with a typical maximum of 437°F (225°C)
- Certain aerospace applications may require FFKM, fluorosilicone, or PTFE instead of FKM
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 (Viton™) Materials Available for MIL-Spec Service
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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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.
What Are MIL-Spec Elastomer Materials?
MIL-Spec elastomer materials are sealing compounds engineered and qualified to meet the stringent performance, quality, and documentation requirements of military and aerospace programs. These materials are typically used in safety-critical systems where seal failure can lead to mission failure, equipment loss, or safety hazards.
Common Considerations for Military and Aerospace Elastomers
- Specification Compliance: Materials must conform to military standards such as MIL-DTL, MIL-PRF, or AMS documents
- Traceability: Full batch and lot traceability is required for quality assurance and audit purposes
- Environmental Resistance: Materials must withstand fuel exposure, thermal cycling, vibration, and altitude changes
- Long-Term Stability: Elastomers must maintain properties over extended service life
- Controlled Manufacturing: Compounds are often produced under tightly controlled processes to ensure consistency
- Documentation: Certificates of conformance, test reports, and material certifications are typically required
Key Standards for Viton™ in the Military and Aerospace Industry
- MIL-DTL and MIL-PRF Specifications: MIL-DTL and MIL-PRF documents define detailed performance and qualification requirements for elastomeric seals used in military systems. Viton™ compounds may be specified under these standards for O-rings, gaskets, and molded parts.
- AMS (Aerospace Material Specifications): AMS specifications govern materials used in aerospace applications, including elastomers for sealing and insulation. Viton™ compounds meeting AMS requirements are commonly used in aircraft and space systems.
- AS (Aerospace Standards): AS standards provide dimensional and performance requirements for aerospace sealing components, including O-rings and gaskets made from Viton™ materials.
- Environmental and Qualification Testing: Military and aerospace elastomers are often subjected to extensive testing, including thermal aging, fluid immersion, vibration, altitude simulation, and mechanical endurance testing.
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.
Military, Aerospace, & Automotive
Glossary of Specifications
Explore our Glossary of Specifications, offering clear definitions and explanations of key industry standards and certifications. Learn how these specifications impact material selection and compliance in various industries.
AMS (Aerospace Material Specification)
Learn about AMS (Aerospace Material Specification) materials, designed to meet rigorous standards for aviation and aerospace industries. Discover their features, compliance, and how they ensure performance and safety in critical applications.
Mil-Spec Elastomeric Materials
Discover Mil-Spec elastomeric materials, engineered to meet stringent military specifications for strength, durability, and precision. Learn about their features, compliance, and how they perform in extreme conditions for defense applications.
USA Manufactured Parts
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Other Common Elastomers Used in the Military and Aerospace Industry
Click here to see some of our most commonly served industries!
Canyon Components supports military and aerospace programs with material selection, specification compliance, documentation support, and custom sealing solutions designed for mission-critical environments. Whether your application requires MIL-Spec Viton™ O-rings or an alternative elastomer for specialized conditions, our engineering team is ready to help.
Canyon Components strives to meet all customer service requests. Feel free to contact Canyon Components engineering and let our knowledgeable staff help you design the perfect part for your needs.
Canrez® FFKM Perfluoroelastomer
CanRez® FFKM O-rings, gaskets, and custom molded parts are used in military systems requiring extreme chemical resistance, high temperature stability, and ultra-low contamination. Suitable for aggressive fuels, oxidizers, and harsh environments where standard FKM cannot meet performance demands.
CanGuard™ RFI & EMI Shielding Materials
CanGuard™ conductive elastomers and shielding gaskets are designed for military enclosures requiring reliable EMI and RFI attenuation. Silver, nickel, or hybrid-filled compounds provide environmental sealing while meeting demanding shielding effectiveness requirements for defense electronics.
Aflas® (TFE/P)
AFLAS O-rings and gaskets are used in military applications involving aggressive fuels, amines, and high-temperature environments. They provide excellent chemical stability and resistance to degradation where standard fluorocarbon materials may show limitations.
Fluorosilicone (FVMQ)
Fluorosilicone O-rings and gaskets are widely specified under military standards for fuel systems requiring low-temperature flexibility and resistance to aviation fuels, hydraulic fluids, and solvents.
Silicone (VMQ, PVMQ)
Silicone O-rings and gaskets are commonly manufactured to AMS and MIL specifications for high-temperature sealing and electrical insulation. They offer excellent flexibility and weather resistance in aerospace and defense systems.
EPDM (Ethylene Propylene)
EPDM O-rings and gaskets are used in military water, steam, and brake system applications requiring resistance to glycol-based fluids, ozone, and environmental aging.
NBR (Nitrile, Buna-N)
NBR O-rings and gaskets are frequently produced to MIL and AMS specifications for fuel, oil, and hydraulic sealing in military ground and air systems.
Neoprene (CR)
Neoprene O-rings and gaskets are specified in various military sealing applications requiring balanced resistance to weathering, moderate oils, and refrigerants, along with dependable mechanical properties.
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.
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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