Wacker Elastosil® R plus 4305/50 Silicone Rubber

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Wacker Elastosil® R plus 4305/50 Silicone Rubber
Categories:	Polymer; Thermoset; Silicone; Silicone Rubber
Material Notes:	ELASTOSIL® R plus 4305/50 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 4305/50 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	1.14 g/cc	0.0412 lb/in³	ISO 1183-1 A

Mechanical Properties	Metric	English	Comments
Hardness, Shore A	50	50	DIN 53505
Tensile Strength at Break	9.20 MPa	1330 psi	DIN 53504 S1
Elongation at Break	800 %	800 %	DIN 53504 S1
Rebound	54 %	54 %	DIN 53512
Tear Strength	38.0 kN/m	217 pli	ASTM D624 B
Compression Set	15 % @Temperature 175 °C, Time 79200 sec	15 % @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

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to view all the property values for this datasheet as they were originally entered into MatWeb.

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