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Silicone


°C -60°~225°C Special Compound -100°~300°C
°F -76°~437°F Special Compound -150°~572°F

General Information
ASTM D2000    FC, FE, GE
SAE J 200 Codes
Relative Cost Medium-high

Primary Uses
 Seals (static) for extreme temperautre applications
 Food applications
 Medical devices
 FDA Applications

Performs Well in
 Engine and trasmission oil (miniral oils)
 Animal and vegetable oil and grease
 Brake fluid (non-petroleum based)
 Fire-resistant hydraulic fluid, HFD-R and HFD-S
 High molecular weight chlorinated aromatic
 hydrocarbons (including flame-resistant
 insulators, and coolant for transformers)
 Diluted salt solutions
 Ozone, aging and weathering

Doesn’t Perform Well in
 Concentrated acids and alkalis
 Steam over 120°C
 Petroleum oils and fuel
 ketone

Description
Physically, silicones are based on silicone, an element derived from quarts. To create this class of synthetic elastomers, pendant organic groups such as methyl, phenyl, and vinyl must be attached to silicone atoms. The different additions of side chains can achieve significant variations in properties. Extreme temperature range and low temperature flexibility are characteristics of silicone compounds. Retention of silicone at high temperature is superior to most other elastic materials. It is suitable for use in static seals in extreme temperature situations. Silicone compounds are very clean and are used in many food and medical applications because they do not impart odor, taste, or toxic.

Application Advantages
 Excellent extreme temperature properties
 Excellent compression set resistance
 Very clean, low odor and taste

Limitations
Typically not good for dynamic seals due to poor tensile strength, tear resistance, and abrasion resistance. Special compounds have been but their strength does not compare to conventional rubber.
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