High-Performance Fluorosilicone Solutions: Custom Compounds, Sheet Stock & Gaskets
Specialty Silicone Products (SSP) manufactures high-performance fluorosilicone (FVMQ) sheet stock, custom compounds, and fabricated components designed for extreme environments. Combining the broad temperature stability of standard silicone with the superior chemical resistance of fluorocarbons, our fluorosilicone materials deliver exceptional sealing performance when exposed to harsh fuels, oils, solvents, and environmental conditions.
What is Fluorosilicone (FVMQ)?
Fluorosilicone, or fluorosilicone rubber (FVMQ), is a specialized elastomer engineered by modifying the silicone polymer chain with fluoroalkyl side groups. This chemical structure yields a material that maintains flexibility and sealing capability from -60°C to 200°C (-76°F to 392°F) while providing outstanding resistance to non-polar solvents, petroleum oils, jet fuels, and aggressive chemicals.
Key Performance Properties & Material Advantages
Chemical & Fuel Resistance: Exceptional resistance to aviation fuels, automotive gasolines, diesel, synthetic lubricants, and aggressive solvents.
Broad Temperature Stability: Retains mechanical flexibility and seal integrity across extreme thermal cycles without hardening or cracking.
Low Compression Set: Superior long-term seal recovery under continuous load, extending gasket service life in critical applications.
Weather & Environmental Durability: Highly resistant to ozone, UV exposure, oxidation, and moisture ingress for reliable outdoor and harsh-environment performance.
Fluorosilicone Grades & Product Forms
| Product Category | Material Specifications | Common Applications |
| Commercial-Grade Sheets | Standard durometers (40–70 Shore A); high chemical resistance | Industrial gaskets, fuel systems, fluid transport |
| Military-Grade (MIL-R-25988) | Class 1, 2, & 3 compliance; stringent tensile and tear specs | Aerospace seals, defense electronics, military aviation |
| Conductive Fluorosilicone | Filled with nickel-graphite or silver-plated aluminum for EMI shielding | Aerospace avionics, enclosure seals, radar systems |
| Custom Compounds & Extrusions | Tailored durometer, color, and cure systems; molded components | Custom fluid seals, specialized valves, extruded profiles |
Key Industrial & Aerospace Applications
Fluorosilicone elastomers are widely specified across industries requiring high reliability under combined chemical and thermal stress:
Aerospace & Defense: Fuel system seals, manifold gaskets, wiring harness grommets, and EMI shielding gaskets for military aircraft and ground vehicles.
Automotive & Transportation: Turbocharger hoses, diaper seals, diaphragm valves, and fuel system O-rings.
Industrial & Energy: Chemical processing equipment seals, oilfield valve gaskets, and high-performance fluid handling components.
Custom Fabrication & Compound Engineering
At SSP, we offer complete in-house compounding, calendering, compression molding, and precision conversion services. Whether you require continuous roll stock, cut-to-spec gaskets, or custom-formulated fluorosilicone compounds tailored to exact durometers or color requirements, our engineering team ensures your material meets strict quality standards and industry specifications.
Contact SSP today to request a quote, order material samples, or discuss custom fluorosilicone formulations for your application.
Frequently Asked Questions About Fluorosilicone Rubber
What is the difference between silicone and fluorosilicone (FVMQ)?
While both elastomers offer exceptional high- and low-temperature stability, standard silicone (VMQ) degrades and swells rapidly when exposed to petroleum-based fuels, oils, and solvents. Fluorosilicone (FVMQ) includes fluorinated side chains added to the silicone polymer backbone. This unique chemical modification allows fluorosilicone to actively repel jet fuel, gasoline, automotive oils, and harsh chemicals while maintaining physical flexibility across temperature extremes (-60°C to +200°C).
What military and aerospace specifications do SSP fluorosilicones meet?
Specialty Silicone Products (SSP) manufactures spec-grade fluorosilicones conforming to major aerospace and defense requirements, including MIL-DTL-25988 (formerly MIL-R-25988) Type 2, Class 1 & Class 2, as well as SAE AMS 3325 and AMS 3326. We also produce conductive, silver-plated aluminum and nickel-graphite fluorosilicone formulations designed to meet MIL-DTL-83528 for combined fuel resistance and EMI/RFI shielding.
What product forms and sheet thicknesses are available?
SSP supplies fluorosilicones in a variety of converted and raw forms to support diverse custom manufacturing needs:
Continuous Roll Stock & Sheets: Available in thicknesses as thin as 0.010” (0.25 mm) up to 0.500” thick.
Ready-to-Mold Compounds: Uncured slab or compound formulations optimized for compression molding.
Custom Extrusions & Fabricated Gaskets: Precision-cut gaskets, tubing, profiles, and custom molded parts.
Is fluorosilicone suitable for EMI shielding applications?
Yes. SSP engineers specialized particle-filled fluorosilicones (such as nickel-graphite or silver-aluminum filled compounds). These materials deliver high attenuation EMI shielding while maintaining full fluid resistance against aviation fuels, de-icing fluids, and hydraulic fluids, making them ideal for military aircraft avionics and harsh-environment defense electronics. Learn more about conductive EMI shielding materials.
What is SSP’s minimum order quantity (MOQ) for fluorosilicone compound or sheet stock?
SSP accommodates low minimum order quantities (MOQs) to support low-volume production runs, prototyping, and custom gasket fabrication without forcing buyers into massive, cost-prohibitive material commitments. Contact our team with your batch size requirements for specific compounding minimums.
Is “flurosilicone” different from fluorosilicone?
No. “Flurosilicone” and “fluoro silicone” are common alternate spellings or typographical errors for fluorosilicone (FVMQ). They refer to the exact same fluorinated silicone elastomer formulation.