Wacker Elastosil® LR 6290 A/B Liquid Silicone Rubber

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Wacker Elastosil® LR 6290 A/B Liquid Silicone Rubber
Categories:	Polymer; Thermoset; Silicone; Silicone Rubber; Liquid Silicone Rubber (LSR)
Material Notes:	ELASTOSIL® LR 6290 A/B Liquid Silicone Rubber is a two-component, solventless liquid silicone rubber system that cures rapidly upon heating to a tough silicone rubber. It has been formulated primarily for use as a heat protective, low durometer fabric coating. Special features: 100% solids Good adhesion Non-blocking without powder Good fire retardancy 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	Metric	English	Comments

Density	1.07 g/cc	0.0387 lb/in³	cured; ASTM D412
Viscosity	70000 cP	70000 cP	Component B; ASTM D412
	82000 cP	82000 cP	catalyzed; ASTM D412
	92000 cP	92000 cP	Component A; ASTM D412

Mechanical Properties	Metric	English	Comments
Hardness, Shore A	25	25	cured; ASTM D2240
Tensile Strength at Break	>= 3.45 MPa	>= 500 psi	cured; ASTM D412
Elongation at Break	>= 400 %	>= 400 %	cured; ASTM D412
Tear Strength	>= 40.0 kN/m	>= 228 pli	cured; ASTM 624 B

Processing Properties	Metric	English	Comments
Pot Life	2880 min	2880 min

Descriptive Properties
Appearance	translucent		Component B
	white		Component A

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PWACK9173 / 204702

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