Fluorosilicone Material Options

SRP can source and convert fluorosilicone sheet and roll materials in a range of options depending on your gasket, seal, or die-cut component requirements. Typical physical properties vary by grade, thickness, durometer, and specification requirement. Material data sheets, certifications, lot traceability, and physical property verification may be available depending on the selected material and project requirements.

Property	Typical Options
Material Type	Fluorosilicone rubber / FVMQ
Format	Solid sheet and roll stock
Thickness Range	.010″ to .500″
Width	Up to 65″
Durometer	40, 50, 60, and 70 Shore A
Color	Blue; custom colors may be available
Temperature Performance	Designed for low-temperature flexibility and high-temperature sealing performance
Fuel and Fluid Resistance	Designed to resist fuels, oils, lubricants, engine fluids, petroleum-based fluids, and certain solvents
Specifications	AMS-R-25988 Type II Class 1 Grades 40, 50, 60, and 70; AMS 3325, AMS 3326, and AMS 3327 options may be available
Applications	Gaskets, seals, strips, pads, aerospace seals, automotive fluid system seals, defense components, and industrial fluid management parts

Fluorosilicone Specifications

Many fluorosilicone gasket and seal projects begin with a drawing that calls out a specific material specification, grade, thickness, and durometer. These requirements are especially common in aerospace, defense, automotive, and industrial fluid management applications where material performance, traceability, and consistency are critical.

SRP can help source and convert fluorosilicone materials that may be available to meet common requirements such as AMS-R-25988 Type II Class 1 Grades 40, 50, 60, and 70, along with AMS 3325, AMS 3326, and AMS 3327 options depending on the project.

Common grade considerations include:

• Grade 40 — softer material for higher compressibility and lower closure-force sealing
• Grade 50 — medium-low durometer for flexibility and mechanical seal integrity
• Grade 60 — mid-range durometer commonly used for gasket and seal applications
• Grade 70 — harder material for higher-pressure sealing or increased wear resistance

Depending on the selected material and project requirements, supporting documentation may include material data sheets, Certificates of Analysis, lot traceability, physical property verification, and applicable material certifications.

When requesting a quote, include the full material callout from your drawing whenever possible. Helpful details include the specification, Type/Class/Grade, thickness, durometer, adhesive requirements, fluid exposure, temperature exposure, tolerance requirements, and quantity.

Custom Fluorosilicone Converting from SRP

Common Fluorosilicone Gasket and Seal Applications

Why Use Fluorosilicone?

Standard silicone is often used for temperature resistance, flexibility, and general sealing. However, it may not be the right choice when the finished part will be exposed to fuels, petroleum-based oils, lubricants, engine fluids, or solvents.

Fluorosilicone is typically selected when a gasket or seal needs both temperature stability and improved resistance to harsh fluids.

It may be a good fit when your part is exposed to:

• Aviation fuel
• Automotive fuel
• Petroleum-based oils
• Synthetic lubricants
• Engine fluids
• Hydrocarbon-based fluids
• Certain solvents
• Temperature changes
• Aerospace or automotive operating environments
• Industrial fluid systems

For general sealing applications without fuel, oil, or solvent exposure, standard silicone may be more cost-effective. For applications involving harsh fluids, fluorosilicone may provide better long-term sealing performance.

Fluorosilicone vs. Standard Silicone

Both silicone and fluorosilicone can offer flexibility and temperature stability. The key difference is fluid resistance.

Standard silicone is often used for general sealing, hot air, outdoor exposure, and high- or low-temperature environments. Fluorosilicone is typically selected when the gasket or seal also needs to resist fuels, oils, lubricants, engine fluids, or certain solvents.

If your part only needs general environmental sealing, standard silicone may be a better option. If your part needs to resist harsh fluids, fluorosilicone may be the better long-term solution.

What to Send with Your RFQ

To help us quote your fluorosilicone part accurately, please include as much of the following information as possible:

• Drawing or part dimensions
• Material callout or specification
• Thickness
• Durometer
• Quantity
• Adhesive backing requirements
• Tolerance requirements
• Application details
• Fluid exposure
• Temperature exposure
• Packaging or presentation requirements

If you are not sure which fluorosilicone grade is required, SRP can help review the application and discuss available material options.