Wacker ELASTOSIL® R 427/60 High Strength Silicone Base

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Wacker ELASTOSIL® R 427/60 High Strength Silicone Base
Categories:	Polymer; Thermoset; Silicone; Silicone Rubber; Liquid Silicone Rubber (LSR)
Material Notes:	ELASTOSIL® R 427/60 is a High Strength Base noted for its exceptional transparency excellent tear strength and excellent mechanical properties. ELASTOSIL® R 427/60 can be used for extruded profiles. ELASTOSIL® R 427/60 vulcanizing characteristics make it possible to achieve short cycle times in the production of molded articles by compression transfer and injection molding. Post-cured vulcanizates can be used for applications in the health care and food handling industries. Special features: ELASTOSIL® R 427/60 contains those ingredients which are suitable for food contact. Under Title 21 "Food and Drugs," Part 177.2600, "Rubber articles intended for repeated use." Because this regulation contains limitations, compliance to the regulation is the responsibility of the user. Key Characteristics: Excellent extrusion qualities Excellent molding qualities Excellent tensile strength & tear resistance Excellent clarity Information provided by Wacker.
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Physical Properties	Metric	English	Comments

Specific Gravity	1.10 - 1.80 g/cc	1.10 - 1.80 g/cc

Mechanical Properties	Metric	English	Comments
Hardness, Shore A	60	60	ASTM D746
Tensile Strength	11.0 MPa	1600 psi	ASTM D2240
Elongation at Break	600 %	600 %	ASTM D412
Tear Strength	43.8 kN/m	250 pli	Die B; ASTM D412
Compression Set	25 % @Temperature 177 °C, Time 79200 sec	25 % @Temperature 351 °F, Time 22.0 hour	Method B; WSTM 1114

Optical Properties	Metric	English	Comments
Transmission, Visible	90 %	90 %	Transparent, but not quantified

Processing Properties	Metric	English	Comments
Cure Time	10.0 min @Temperature 171 °C	0.167 hour @Temperature 340 °F	press cured, post cured 4 h/200 °C

Descriptive Properties
Appearance	Transparent		WSTM 1297

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PWACK9912 / 197511

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