Saint-Gobain COHRlastic® CF4420 High Heat Reinforced Solid Rubber

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Saint-Gobain COHRlastic® CF4420 High Heat Reinforced Solid Rubber
Categories:	Polymer; Thermoset; Rubber or Thermoset Elastomer (TSE)
Material Notes:	Description: COHRlastic® CF silicone solid rubber reinforced with fiberglass is a dimensionally-stable, durable material for press pads, belting and gasketing. It is available in six constructions. CF 4420 is specially formulated for thermal stability and long life under extreme heat and pressure for extended dwell times. It resists reversion (i.e. softening and outgassing) longer than general purpose silicone. Throughout its useful life, 4420 has thermal stability for consistent thermal conductivity. All data based on a 0.0625 inch test sample.(Also available in 0.045"; Thickness shown is for silicone rubber. Fiberglass thickness = 0.014".) Information provided by Saint Gobain Performance Products.
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Physical Properties	Original Value	Comments

Volatile Organic Compounds (VOC) Content	<= 0.50 g/l	Weight Loss (4 hrs at 400°F)

Mechanical Properties	Original Value	Comments
Hardness, Shore A	74
Elongation at Break	<= 10 %
Flexural Strength	500 psi	Diaphragm Burst Strength
Tear Strength	300 pli

Electrical Properties	Original Value	Comments
Dielectric Strength	500 V/mil

Thermal Properties	Original Value	Comments
CTE, linear	150 µin/in-°F @Temperature 20.0 °C	Silicone rubber component
Thermal Conductivity	1.90 BTU-in/hr-ft²-°F

Descriptive Properties
Color	Brown

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PSTGQZ248 / 68762

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