Wacker Elastosil® R plus 4001/40 Silicone Rubber

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Wacker Elastosil® R plus 4001/40 Silicone Rubber
Categories:	Polymer; Thermoset; Silicone; Silicone Rubber
Material Notes:	Product description: HCR silicone rubbers of the ELASTOSIL® R plus 4001 series are addition-curing, one-component compounds for the manufacture of press cured articles. The vulcanizates show excellent transparency and good to very good mechanical properties. No peroxide split products are released during cure or post cure. Cure system is significantly faster compared to peroxide curing materials. Properly postcured vulcanizates of ELASTOSIL® R plus 4001 comply with BfR and FDA food contact regulations. Cure time is reduced to 30 - 50 % depending on the wall thickness. Special features: easy demolding dry surface no unpleasant smell caused by peroxides no inhibition by oxygen Application: The grade is suitable for the manufacture of all kind of articles for technical and food-contact applications. Specially thick walled articles can take advantage of the fast curing material. Information provided by Wacker Chemie AG.
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Physical Properties	Metric	English	Comments

Density	1.13 g/cc	0.0408 lb/in³	ISO 1183-1 A

Mechanical Properties	Metric	English	Comments
Hardness, Shore A	40	40	DIN 53505
Tensile Strength at Break	11.5 MPa	1670 psi	DIN 53504 S1
Elongation at Break	750 %	750 %	DIN 53504 S1
Rebound	57 %	57 %	DIN 53512
Tear Strength	35.0 kN/m	200 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

Descriptive Properties
Appearance	transparent

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PWACK9265 / 204794

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