Precision Polymer Engineering S50K Silicone Rubber

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Precision Polymer Engineering S50K Silicone Rubber
Categories:	Polymer; Thermoset; Rubber or Thermoset Elastomer (TSE); Silicone
Material Notes:	Silicone Rubber, 45-55 °IRHD. Silicone rubber having both methyl and vinyl substituent groups on the polymer chain. Formulated using only those ingredients determined by the United States Federal Food and Drug Administration (FDA) to be in accordance with Code of Federal Regulations, Title 21 (CFR21), Section 177.2600. Formulated to BS2494 Type ‘W’ and Water Research Council (WRC) tested in accordance with BS6920 ‘Items which have passed full tests of effects on water quality’ (for use in potable water applications). ASTM & ISO designation = VMQ. WRC Approval No. 9910521. Applications: Cold and hot water, plus low pressure steam, up to +110°C.
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Mechanical Properties	Original Value	Comments

Hardness, Shore A	50	°IRHD; ASTM D1415
	45 - 55	°IRHD, ±5 change after 168 hours @ 70°C; ASTM D1415
Tensile Strength, Yield	9.00 MPa	ASTM D412
	7.20 - 10.8 MPa	±20% change after 168 hours @ 70°C; ASTM D412
Elongation at Break	375 %	ASTM D412
	262.5 - 487.5 %	±30% change after 168 hours @ 70°C; ASTM D412
Compression Set	12 % @Temperature 23.0 °C, Time 252000 sec	ASTM D395

Thermal Properties	Original Value	Comments
Maximum Service Temperature, Air	250 °C
Minimum Service Temperature, Air	-60.0 °C
	-60.0 °C	Non-brittle after 3 minutes
Flash Point	>= 300 °C

Compliance Properties	Original Value	Comments
FDA	Yes	See notes for details.

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