Wacker Elastosil® LR 6291 A/B Liquid Silicone Rubber

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Wacker Elastosil® LR 6291 A/B Liquid Silicone Rubber
Categories:	Polymer; Thermoset; Silicone; Silicone Rubber; Liquid Silicone Rubber (LSR)
Material Notes:	ELASTOSIL® LR 6291 A/B Liquid Silicone Rubber is a two-component, solventless system that cures rapidly upon heating to a tough silicone rubber. It has been formulated as a low viscosity, heat resistant, general purpose fabric coating. Special features: High durometer hardness Good tensile strength Good elongation Non-blocking Good adhesion Application: Cure is accomplished by simply mixing equal parts (1:1) by weight of part A and part B. Oven cure at 172 C-200°C (340 F-392°F) for one to six minutes depending on oven, coating thickness and type of fabric used. Curing may be retarded and prevented by: nitrogen compounds such as amines and amides, sulfur compounds, anti-aging additives and other additives in rubbers and plastics, etc. Therefore, a materials compatibility test is always recommended. Information provided by Wacker Chemie AG.
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Physical Properties	Original Value	Comments

Density	1.10 g/cc	Component A; ASTM D412
	1.10 g/cc	Component B; ASTM D412
	1.10 g/cc	cured; ASTM D412
Viscosity	70000 cP	Component B; ASTM D412
	75000 cP	Component B, catalyzed; ASTM D412
	75000 cP	Component A, catalyzed; ASTM D412
	85000 cP	Component A; ASTM D412

Mechanical Properties	Original Value	Comments
Hardness, Shore A	25 - 35	cured; ASTM D2240
Tensile Strength at Break	>= 4.48 MPa	cured; ASTM D412
Elongation at Break	>= 450 %	cured; ASTM D412
Tear Strength	>= 45.0 kN/m	cured; ASTM 624 B

Processing Properties	Original Value	Comments
Pot Life	2880 min	Component A
	2880 min	Component B

Descriptive Properties
Appearance	translucent	Component B
	white	Component A

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 go back to viewing the property data in MatWeb's normal format.

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PWACK9174 / 204703

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