Fluorosilicone (FVMQ) Sheet, Rolls & Uncured Compound
Fluorosilicone rubber (FVMQ) combines the wide temperature stability of conventional silicone with the aggressive chemical, fuel, and solvent resistance of a fluorocarbon. This unique molecular structure makes it an essential material choice for critical sealing, gasketing, and insulation challenges in aerospace, automotive, and industrial fluid management.
All of ElastaPro’s fluorosilicones are Made in America and produced in accordance with our ISO 9001:2015 / AS9100D quality management system (QMS). We provide a full Certificate of Analysis (COA), lot traceability, and physical property verification with each batch.
Fluorosilicone Sheets and Rolls
ElastaPro supplies pre-cut fluorosilicone sheets in:
- Thicknesses from .010” to .500”
- Widths up to 65”
- Durometers from 40 to 70 Shore A.
- Colors are typically blue, but customer colors are available.
Sheet Thicknesses
Common sheet thicknesses include:
- 1/64” (0.0156”)
- 1/32” (0.032”)
- 1/16” (0.062”)
- 3/32” (0.093”)
- 1/18” (0.125”)
Sheet Sizes
Common sheet sizes include:
- 12” x 12”
- 12” x 24”
- 36” x 36”
Rolls
ElastaPro supplies continuous rolls in
- Thicknesses from .010” to .500”
- Widths up to 65”
- Durometers from 40 to 70 Shore A.
- Colors are typically blue, but customer colors are available.
Often, customers order roll stock that is 36” wide.
Technical Specifications & Military and Aerospace Compliance
ElastaPro manufactures specification-grade fluorosilicone sheeting designed to meet stringent aerospace, defense, and industrial standards. Our materials deliver stable performance under continuous exposure to harsh mediums, ensuring operational integrity where standard elastomers fail. The table below describes materials that meet AMS-R-25988, which has replaced MIL-DTL-25988 on new part drawings.
| Specification | Grade / Durometer | Properties & Testing Standards |
| AMS-R-25988B Type II Class 1 | Grade 40 | Low durometer for high compressibility; excellent fuel/solvent resistance. |
| AMS-R-25988B Type II Class 1 | Grade 50 | Medium-low durometer balancing flexibility with mechanical seal integrity. |
| AMS-R-25988 Type II Class 1 | Grade 60 | Standard mid-range durometer optimizing tensile strength and compression set. |
| AMS-R-25988B Type II Class 1 | Grade 70 | High durometer for high-pressure sealing and increased wear resistance. |
ElastaPro also offers these AMS fluorosilicones:
Performance Characteristics
Fuel and Chemical Resistance
Unlike standard silicone, which swells and degrades when exposed to petroleum-based fluids, FVMQ maintains its physical properties when submerged in or exposed to:
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Jet fuel (JP-4, JP-5, JP-8) and aviation gasoline
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Synthetic and petroleum-based lubricants
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Automotive fuels, oils, and engine fluids
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Chlorinated and aromatic solvents
Thermal Endurance
Our specialized formulations maintain flexibility and structural integrity across an expansive temperature envelope:
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Low-Temperature Limit: Retains sealing capabilities down to -60°C (-76°F).
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High-Temperature Limit: Resists thermal degradation during continuous exposure up to +200°C (+392°F).
Material Comparison: Fluorosilicone vs. Standard Silicone
While both materials share a backbone that provides excellent ozone and UV resistance, their behavior in operational environments diverges significantly based on chemical exposure:
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Standard Silicone (VMQ): Ideal for extreme high or low temperatures, hot air, and general atmospheric sealing. However, it readily absorbs hydrocarbons, causing severe swelling, loss of tensile strength, and premature seal failure when exposed to fuels or oils.
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Fluorosilicone (FVMQ): Features fluorinated side chains that actively repel hydrocarbons. This addition allows the material to deliver the exact same thermal performance as standard silicone while serving as an effective barrier against fluid penetration and chemical attack.
Applications & Industries
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Aerospace & Defense: O-rings, fuel system seals, canopy gaskets, and firewall access panel seals.
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Automotive: Diaphragms, exhaust gas recirculation (EGR) valves, and fuel line quick-connect seals.
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Industrial Processing: Chemical blending valves, fuel storage tank seals, and solvent recovery systems.
Frequently Asked Questions
What is the primary difference between silicone and fluorosilicone?
While both elastomers offer exceptional thermal stability across identical temperature ranges, standard silicone (VMQ) lacks chemical resistance. If exposed to fuels, oils, or solvents, standard silicone will swell, soften, and lose its physical integrity. Fluorosilicone (FVMQ) features fluorinated side chains that actively repel hydrocarbons, allowing it to maintain its sealing properties while fully submerged in harsh chemicals, aviation fuels, and petroleum products.
In what temperature environments can this material operate?
Our specification-grade compound is engineered to withstand extreme thermal fluctuations. It remains flexible and operational at temperatures as low as -60°C (-76°F) and resists degradation, hardening, or cracking during continuous high-temperature exposure up to +200°C (+392°F).
Is the material resistant to automotive and aviation fuels?
Yes. The primary engineering benefit of this fluorinated polymer is its superior resistance to a wide array of fluids. This includes jet fuels (such as JP-4, JP-5, and JP-8), aviation gasoline, motor oils, synthetic lubricants, hydraulic fluids, and chlorinated solvents.
What specifications do these sheets comply with?
ElastaPro manufactures these materials to meet rigorous defense and aerospace standards. Our current compound lineup conforms directly to AMS-R-25988B Type II Class 1 and MIL-DTL-25988D Type II Class 1 requirements, available across multiple durometer options including Grades 40, 50, 60, and 70.
Are custom roll widths and thicknesses available for ordering?
Yes. Because industrial applications require exact dimensions to ensure proper seal compression, we manufacture our sheeting to your specific project requirements. We offer custom roll widths, specific thicknesses, and continuous sheet configurations. Please contact our engineering team to submit a Request for Quote (RFQ).
Is fluorosilicone the same as fluoro silicone?
Yes. There is no technical difference.
