Wacker Elastosil® R plus 4305/30 Silicone Rubber

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Wacker Elastosil® R plus 4305/30 Silicone Rubber
Categories:	Polymer; Thermoset; Silicone; Silicone Rubber
Material Notes:	ELASTOSIL® R plus 4305/30 is a platinum-catalyzed addition-curing, two-part silicone rubber for manufacturing extruded articles. Cured articles show an excellent transparency and good to very good mechanical properties. Application: ELASTOSIL® R plus 4305/30 is suitable for use under the Recommendation XV. Silicones of the BfR and FDA 21 CFR §177.2600 "Rubber Articles Intended for Repeated Use" provided that the product is appropriately cured/ post-cured and the respective limits for extractable/migrating or volatile components are met. Information provided by Wacker Chemie AG.
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Physical Properties	Metric	English	Comments

Density	1.11 g/cc	0.0401 lb/in³	ISO 1183-1 A

Mechanical Properties	Metric	English	Comments
Hardness, Shore A	30	30	DIN 53505
Tensile Strength at Break	8.90 MPa	1290 psi	DIN 53504 S1
Elongation at Break	800 %	800 %	DIN 53504 S1
Rebound	54 %	54 %	DIN 53512
Tear Strength	31.0 kN/m	177 pli	ASTM D624 B
Compression Set	20 % @Temperature 175 °C, Time 79200 sec	20 % @Temperature 347 °F, Time 22.0 hour	DIN ISO 815-B

Optical Properties	Metric	English	Comments
Transmission, Visible	90 %	90 %	"Transparent" but manufacturer does not quantify.

Processing Properties	Metric	English	Comments
Cure Time	15.0 min @Treatment Temp. 165 °C	0.250 hour @Treatment Temp. 329 °F	post cured 4h/200°C

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

Descriptive Properties
Appearance	transparent

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PWACK9281 / 204810

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