Precision Polymer Engineering S60R Silicone Rubber

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Precision Polymer Engineering S60R Silicone Rubber
Categories:	Polymer; Thermoset; Rubber or Thermoset Elastomer (TSE); Silicone
Material Notes:	Red Silicone 55-65 °IRHD. Diesel cylinder liner ring grade. Silicone rubber having both methyl and vinyl substituent groups on the polymer chain. ASTM & ISO designation = VMQ. Applications: Excellent heat resistance and low temperature flexibility combined with low compression set performance. Used primarily for diesel cylinder liner O-Rings (coolant sealing). Although silicone will swell in petroleum lubricants, this is not necessarily detrimental in static sealing applications.
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Mechanical Properties	Metric	English	Comments

Hardness, Shore A	60	60	°IRHD; ASTM D1415
	66	66	°IRHD, +6 change after 672 hours @ 200°C; ASTM D1415
Tensile Strength, Yield	6.96 MPa	1010 psi	-13% change after 672 hours @ 200°C; ASTM D412
	8.00 MPa	1160 psi	ASTM D412
Elongation at Break	307.5 %	307.5 %	-25% change after 672 hours @ 200°C; ASTM D412
	410 %	410 %	ASTM D412
Compression Set	18 % @Temperature 150 °C, Time 252000 sec	18 % @Temperature 302 °F, Time 70.0 hour	ASTM D395

Thermal Properties	Metric	English	Comments
Maximum Service Temperature, Air	250 °C	482 °F
Minimum Service Temperature, Air	-60.0 °C	-76.0 °F
	-60.0 °C	-76.0 °F	Non-brittle after 3 minutes
Flash Point	>= 300 °C	>= 572 °F

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PPRECI248 / 57972

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