Fluorosilicone Rubber (FVMQ)
Fluorosilicone combines the flexibility and resilience of silicone with added resistance to fuels, oils, solvents, and harsh chemicals. It delivers stable sealing performance across a wide temperature range, resists swelling in hydrocarbons, and meets AMS-R-25988 and MIL-DTL-25988 specifications for aerospace and defense.
ElastaPro also manufactures aerospace-grade fluorosilicone compounds conforming to AMS 3325, AMS 3326, and AMS 3327. Every batch is Made in USA under ElastaPro’s ISO 9001:2015 / AS9100D quality system and shipped with a complete Certificate of Analysis (COA).
Need Fluorosilicone Sheet or Slit Rolls?
We manufacture pre-cut sheets, continuous rolls, and uncured compounds with low minimums and fast lead times.
Request a Quote (RFQ)Fluorosilicone Sheets (40 to 70 Durometer)
Choose fluorosilicone sheets in these durometers (Shore A).
Standard Sheet Sizes & Roll Dimensions
Solid silicone sheet from ElastaPro is available in these sizes and roll dimensions.
Widths
- Standard: 36″ (914 mm) and 48″ (1219 mm)
- Custom: Up to 67″ (1701.8 mm) — among the widest available in the industry
Linear Lengths
- Continuous rolls up to 300+ feet depending on thickness
Thickness Range
- 0.005″ to 0.675″ (0.13 mm to 17.145 mm)
Cut Sheet Sizes
- 12″ × 12″
- 24″ × 24″
- 36″ × 36″
- 48″ × 48″
- Custom dimensions available
Standard Silicone vs. Fluorosilicone
| Property / Feature | Standard Silicone Rubber (VMQ) | Fluorosilicone Rubber (FVMQ) |
|---|---|---|
| Chemical Structure | Standard siloxane backbone | Fluorinated side chains on the polymer backbone |
| Operating Temperature | -80°F to +450°F (-62°C to +232°C) | -76°F to +392°F (-60°C to +200°C) |
| Atmospheric & Weather Resistance | Exceptional | Exceptional (inherits VMQ properties) |
| Hydrocarbon & Fuel Resistance | Poor: Absorbs fluid, leading to volume swell, softening, and rapid seal failure | Superior: Actively repels non-polar solvents, fuels, and oils |
| Approved Fluid Submersions | Not recommended for fuels/oils | Aviation/military fuels (JP-4, JP-5, JP-8), petroleum oils, synthetic lubricants, engine/transmission fluids, chlorinated/aromatic solvents |
| Primary Function | High/low-temperature sealing in non-chemical environments | Inert chemical barrier for hostile chemical and fluid environments |
Fluorosilicone Rubber FAQs
What is the difference between fluorosilicone and flourosilicone?
Fluorosilicone is the correct technical name for fluorinated silicone rubber (FVMQ). “Flourosilicone” and “fluoro silicone” are common alternate spellings and spacing variations used interchangeably across engineering documents and purchasing catalogs. They all refer to the exact same polymer formulation.
What is the primary benefit of fluorosilicone rubber over standard silicone?
While both elastomers withstand extreme cold and heat (-76°F to +392°F), standard silicone swells and degrades when exposed to petroleum products. Fluorosilicone features fluorinated side chains that actively repel fuels, jet propellants, oils, and harsh solvents.
What military and aerospace specs does ElastaPro fluorosilicone comply with?
Our material lineup conforms to AMS-R-25988B Type II Class 1, MIL-DTL-25988D Type II Class 1, AMS 3325, AMS 3326, and AMS 3327 across 40, 50, 60, and 70 Shore A durometers.
Can fluoro silicone sheeting be supplied in custom widths and colors?
Yes. While standard fluorosilicone rubber sheeting is supplied in blue continuous rolls up to 65” wide, ElastaPro offers custom color matching, specific thickness slicing, and custom roll slitting to meet your exact die-cutting requirements.
How and where is fluoro silicone used?
Due to its dual resistance to extreme temperatures and aggressive media, fluorosilicone rubber sheet material is widely specified across demanding industrial sectors:
- Aerospace & Defense: Fuel tank access panel seals, canopy gaskets, firewall access barriers, and O-rings.
- Automotive & Transportation: Turbocharger diaphragms, exhaust gas recirculation (EGR) valve seals, and quick-connect fuel line gaskets.
- Industrial Fluid Processing: Chemical blending valve seats, solvent recovery system seals, and fuel storage gaskets.