Wacker Elastosil® R 861/70 Silicone Rubber

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Wacker Elastosil® R 861/70 Silicone Rubber
Categories:	Polymer; Thermoset; Silicone; Silicone Rubber
Material Notes:	These translucent compounds are highly flexible and are noted for their low compression set and improved medium resistance. Application: This compound can be used in the manufacture of molded parts, but also particularly for producing profiles, e. g. for windows and facades. Provided appropriate processing, articles produced from ELASTOSIL® R 861/70 can be used for food contact applications in accordance with the Recommendation "XV. Silicones" of the BfR and FDA 21 CFR § 177.2600 under observance of any given limitations on extractable and volatile substances. Furthermore, the product contains low levels of residual toluene which has to be completely removed from the final food contact article. Information provided by Wacker Chemie AG.
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Physical Properties	Metric	English	Comments

Density	1.20 g/cc	0.0434 lb/in³	ISO 1183-1 A

Mechanical Properties	Metric	English	Comments
Hardness, Shore A	69	69	curing agent E; DIN 53505
	73	73	cooling agent immersion
	73	73	oil storage
	74	74	curing agent C1
	49 @Treatment Temp. 150 °C, Time 259000 sec	49 @Treatment Temp. 302 °F, Time 72.0 hour	IRM 903 oil resistance, C6 crosslinker
	70 @Treatment Temp. 150 °C, Time 259000 sec	70 @Treatment Temp. 302 °F, Time 72.0 hour	IRM 901 oil resistance, C6 crosslinker
	75 @Treatment Temp. 125 °C, Time 3.629e+6 sec	75 @Treatment Temp. 257 °F, Time 1008 hour	after immersion, crosslinker C1
Tensile Strength at Break	8.70 MPa	1260 psi	curing agent C1; DIN 53504 S1
	8.90 MPa	1290 psi	curing agent E; DIN 53504 S1
	9.60 MPa	1390 psi	cooling agent immersion
	10.2 MPa	1480 psi	oil storage
	7.00 MPa @Treatment Temp. 125 °C, Time 3.629e+6 sec	1020 psi @Treatment Temp. 257 °F, Time 1008 hour	after immersion, crosslinker C1
	7.50 MPa @Treatment Temp. 150 °C, Time 259000 sec	1090 psi @Treatment Temp. 302 °F, Time 72.0 hour	IRM 901 oil resistance, C6 crosslinker
	8.20 MPa @Treatment Temp. 150 °C, Time 259000 sec	1190 psi @Treatment Temp. 302 °F, Time 72.0 hour	IRM 903 oil resistance, C6 crosslinker
Elongation at Break	294 %	294 %	cooling agent immersion
	295 %	295 %	curing agent C1; DIN 53504 S1
	300 %	300 %	curing agent E; DIN 53504 S1
	391 %	391 %	oil storage
	238 % @Treatment Temp. 150 °C, Time 259000 sec	238 % @Treatment Temp. 302 °F, Time 72.0 hour	IRM 903 oil resistance, C6 crosslinker
	247 % @Treatment Temp. 150 °C, Time 259000 sec	247 % @Treatment Temp. 302 °F, Time 72.0 hour	IRM 901 oil resistance, C6 crosslinker
	252 % @Treatment Temp. 125 °C, Time 3.629e+6 sec	252 % @Treatment Temp. 257 °F, Time 1008 hour	after immersion, crosslinker C1
Rebound	47 %	47 %	curing agent E; DIN 53512
	52 %	52 %	curing agent C1; DIN 53512
Tear Strength	18.0 kN/m	103 pli	curing agent C1; ASTM D624 B
	18.0 kN/m	103 pli	curing agent E; ASTM D624 B
Compression Set	11 % @Temperature 175 °C, Time 79200 sec	11 % @Temperature 347 °F, Time 22.0 hour	curing agent C1; DIN ISO 815-B
	20 % @Temperature 175 °C, Time 252000 sec	20 % @Temperature 347 °F, Time 70.0 hour	curing agent C1; DIN ISO 815-B
	28 % @Temperature 175 °C, Time 79200 sec	28 % @Temperature 347 °F, Time 22.0 hour	curing agent E; DIN ISO 815-B
	30 % @Temperature 175 °C, Time 252000 sec	30 % @Temperature 347 °F, Time 70.0 hour	curing agent E; DIN ISO 815-B

Compliance Properties	Metric	English	Comments
FDA	Yes	Yes	See notes for details.

Descriptive Properties
Appearance	translucent

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PWACK9247 / 204776

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