Wacker Elastosil® LR 6239 F Liquid Silicone Rubber

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Wacker Elastosil® LR 6239 F Liquid Silicone Rubber
Categories:	Polymer; Thermoset; Silicone; Silicone Rubber; Liquid Silicone Rubber (LSR)
Material Notes:	ELASTOSIL® LR 6239 F is a free-flowing addition curing silicone rubber, which is mixed with crosslinker to form a ready-to-use product with long pot life which cures rapidly at high temperatures. Special features: solvent-free processing viscosity suitable for silk-screen printing long term flexibility over a temperature range from -50°C to +200 °C good resistance to chemicals long pot life of ready-to-use mixture Application: ELASTOSIL® LR 6239 F may be used for applications which require high or low temperature resistant flexible coating. A typical application in the automotive industry is silkscreen printing on selected areas of cylinder head gaskets. Information provided by Wacker Chemie AG.
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Physical Properties	Original Value	Comments

Density	1.08 g/cc	ISO 2811
Brookfield Viscosity	30000 cP	dynamic

Mechanical Properties	Original Value	Comments
Hardness, Shore A	40	cured; ISO 868

Thermal Properties	Original Value	Comments
Maximum Service Temperature, Air	200 °C
Minimum Service Temperature, Air	-50.0 °C

Processing Properties	Original Value	Comments
Cure Time	3.00 - 5.00 min @Treatment Temp. 180 °C	catalyzed A+B
	5.00 - 10.0 hour @Treatment Temp. 50.0 °C	postcuring for 1h/150°C
Pot Life	2880 - 4320 min

Descriptive Properties
Color	iron oxide red	catalyzed A+B
	iron oxide red	cured
	iron oxide red	uncured

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PWACK9167 / 204696

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