AMS-Spec Viton™ for the Military and Aerospace Industry
AMS-Spec 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 meet strict aerospace material controls, performance consistency, and traceability requirements. AMS (Aerospace Material Specification) standards govern the formulation, processing, and qualification of elastomeric materials used in aircraft, defense systems, and aerospace equipment where reliability and repeatability are critical.
AMS-qualified Viton™ O-rings, gaskets, and custom molded parts are commonly specified for aircraft fuel systems, hydraulic systems, environmental control systems, propulsion support hardware, and ground support equipment. These materials provide excellent resistance to aviation fuels, hydraulic fluids, lubricants, and environmental exposure while maintaining mechanical stability under temperature extremes, vibration, and pressure cycling.
Canyon Components supports aerospace OEMs, defense contractors, and Tier-1 suppliers with AMS-compliant Viton™ materials, offering controlled compounds, full documentation, and material traceability. Contact our expert staff for assistance selecting AMS-Spec Viton™ O-rings, gaskets, and custom molded parts for aerospace and defense applications.
Common names include: FKM (Fluorocarbon), Fluorocarbon Rubber
Trade names include: Viton™, Fluorel®, Technoflon®, Dai-El®
Features of AMS-Spec Viton™ in Military and Aerospace Applications
- AMS-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 across wide temperature ranges encountered in aerospace service
- AMS-qualified Viton™ compounds offer low compression set for long-term sealing reliability
- Viton™ materials exhibit excellent resistance to ozone, weathering, and environmental aging
- AMS-Spec Viton™ compounds are produced under controlled formulations and processing requirements
- Materials are available with full traceability, certifications, and aerospace documentation
Limitations of AMS-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 specified
- Viton™ compounds are not compatible with ammonia gas or strong inorganic bases
- AMS-Spec Viton™ materials typically have a service temperature range up to 437°F (225°C), depending on compound
- Certain aerospace applications may require fluorosilicone, FFKM, 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 AMS-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 AMS-Spec Elastomer Materials?
AMS-Spec elastomer materials are sealing compounds governed by Aerospace Material Specifications that define requirements for composition, processing, performance, and quality control. Unlike general industrial elastomers, AMS materials are produced to meet aerospace-specific expectations for consistency, traceability, and qualification.
Common Considerations for AMS-Spec Elastomers
- Material Control: Strict control of formulation, curing, and processing parameters
- Traceability: Lot-level traceability from raw material through finished part
- Environmental Resistance: Performance under fuels, hydraulic fluids, thermal cycling, and vibration
- Repeatability: Consistent mechanical and chemical properties across production batches
- Documentation: Certificates of Conformance, material certifications, and test reports are typically required
- Qualification: Materials may undergo extensive validation before being approved for flight or defense use
Key AMS Standards Relevant to Viton™ in Aerospace
- AMS (Aerospace Material Specifications): AMS documents define elastomer requirements for aerospace applications, including physical properties, heat aging, fluid resistance, and compression set. Viton™ compounds qualified to AMS specifications are widely used for aerospace sealing components.
- AS (Aerospace Standards): AS standards define dimensional and application requirements for aerospace seals, including O-rings and gaskets produced from AMS-qualified materials.
- Qualification and Environmental Testing: AMS-Spec Viton™ materials may be subjected to thermal aging, fuel immersion, hydraulic fluid exposure, vibration testing, and altitude simulation to ensure long-term reliability.
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
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AMS (Aerospace Material Specification)
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Mil-Spec Elastomeric Materials
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AMS-Spec Materials Available
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Canyon Components supports military and aerospace programs with AMS-compliant Viton™ materials, offering material selection guidance, documentation support, and custom sealing solutions designed for mission-critical environments. Whether your application requires AMS-Spec Viton™ O-rings or an alternative elastomer for specialized conditions, our engineering team is ready to assist.
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 engineered for aerospace systems requiring extreme chemical resistance, plasma stability, and high temperature performance. Suitable for aggressive fuels, oxidizers, and environments where AMS-grade FKM materials may not provide sufficient durability.
CanGuard™ RFI & EMI Shielding Materials
CanGuard™ conductive elastomers are designed for aerospace enclosures requiring reliable EMI and RFI attenuation. Silver or nickel filled silicone and fluorosilicone compounds provide environmental sealing while supporting shielding performance in avionics and electronic housings.
Aflas® (TFE/P)
AFLAS O-rings and gaskets are used in aerospace systems exposed to aggressive fuels, amines, and high temperature environments. They provide strong resistance to chemical degradation where traditional AMS fluorocarbon compounds may show limitations.
Fluorosilicone (FVMQ)
Fluorosilicone O-rings and gaskets are commonly manufactured to AMS specifications for aerospace fuel and hydraulic systems. They combine low temperature flexibility with resistance to aviation fuels, solvents, and synthetic lubricants.
Silicone (VMQ, PVMQ)
Silicone O-rings and gaskets are produced to AMS material standards for high temperature sealing, electrical insulation, and environmental exposure. They provide excellent flexibility and stability in aerospace applications.
EPDM (Ethylene Propylene)
EPDM O-rings and gaskets may be specified for aerospace systems involving steam, glycol based fluids, ozone, and environmental sealing where hydrocarbon resistance is not required.
NBR (Nitrile, Buna-N)
NBR O-rings and gaskets are manufactured to AMS specifications for aerospace fuel, oil, and hydraulic sealing applications requiring dependable mechanical performance and fluid resistance.
Neoprene (CR)
Neoprene O-rings and gaskets are produced under select AMS standards for aerospace applications requiring balanced resistance to weathering, moderate oils, refrigerants, and environmental aging.
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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