Print Logo

O-Ring Material Selection Guide

  • Standard CompoundSpecial Compound

Rubber compounds are a mixture of polymers, fillers, anti-oxitives and curatives. Various combinations can improve specific properties. Special compounds can be made to broaden temperature range or improve fluid resistance. These may add to lead time, but can lead to better application performance.

Filter Materials By:


°F°C
°F   -   °F save

save

Fluorosilicone

Material Selection Guide

Fluorosilicone

Trade Names:

  • Silastic LS . . . Dow Corning Corporation
  • FSE . . . Momentive Performance Materials

ASTM D1418 Designation: FVMQ

ASTM D2000/SAE J200 Type, Class: FK

Apple Compound Designation: FS

Standard Color: Blue

Description: Fluorosilicone combines the good high and low temperature stability of Silicones with the fuel, oil, and solvent resistance of Fluorocarbons.

Key Use(s): Aerospace fuel systems. Auto fuel emission control systems. Primarily for static sealing applications.

Temperature Range: Standard Compound: -75° to +400°F.

Hardness (Shore A): 40 to 80.

Features: Fluorosilicone is most often used in aerospace applications for systems requiring fuel and/or diester-based lubricant resistance up to 400° F.

Although generally specified for aerospace use, due to its excellent fuel resistance and high temperature stability, Fluorosilicone is becoming an increasingly popular material for a wider range of sealing applications.

Featuring good compression set and resilience properties, fluorosilicone compounds are suitable for exposure to air, sunlight, ozone, chlorinated and aromatic hydrocarbons.

Limitations: Due to limited physical strength, poor abrasion resistance, and high friction characteristics, Fluorosilicone elastomers are not generally recommended for dynamic sealing. They are predominately designed for static sealing use. They are also not recommended for exposure to brake fluids, hydrazine, or ketones.

 


 

Featured Article

Video: 5 Things You Need to Know to Avoid Automated Assembly Issues

Video: 5 Things You Need to Know to Avoid Automated Assembly Issues

Recognizing seal feedability problems during the production process often occurs too late for a simple solution. That’s why we created a video that outlines exactly what you need to be on the lookout for.

Questions?

*Please use our quick form for all Sample Request, Request for Quote or Engineering Requests.

This tool is meant to be used as a professional guide only. Because no two situations or installations are the same, these comments, suggestions, and recommendations are necessarily general and should not be relied upon by any purchaser without independent verification based on the particular installation or use. We strongly recommend that the seal you select be rigorously tested in the actual application prior to production use.

Questions?

*Please use our quick form for all Sample Request, Request for Quote or Engineering Requests.