Wacker Elastosil® R 6550 F Silicone Rubber

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Wacker Elastosil® R 6550 F Silicone Rubber
Categories:	Polymer; Thermoset; Silicone; Silicone Rubber
Material Notes:	ELASTOSIL® R 6550 F is an addition-curing, easy pigmentable two-component silicone rubber. Its vulcanizates are noted for their dry surface and excellent electrical properties. Properties: ELASTOSIL® R 6550 F effectively protects woven and braided flexible sleevings against environmental influences and mechanical damage. Special features: dispersible in suitable solvents (e.g. xylene) good adhesion on many substrates improved heat stability good mechanical properties electrical insulating Information provided by Wacker Chemie AG.
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Physical Properties	Original Value	Comments

Density	1.14 g/cc	DIN 53479

Mechanical Properties	Original Value	Comments
Hardness, Shore A	59	cured with 1% Wacker® crosslinker 525; DIN 53505
	63	cured with 1% Wacker® crosslinker W; DIN 53505
Tensile Strength at Break	5.20 MPa	cured with 1% Wacker® crosslinker W; DIN 53504 S1
	5.60 MPa	cured with 1% Wacker® crosslinker 525; DIN 53504 S1
Elongation at Break	250 %	cured with 1% Wacker® crosslinker W; DIN 53504 S1
	320 %	cured with 1% Wacker® crosslinker 525; DIN 53504 S1
Tear Strength	18.3 kN/m	cured with 1% Wacker® crosslinker 525; ASTM D624 B
	20.4 kN/m	cured with 1% Wacker® crosslinker W; ASTM D624 B

Optical Properties	Original Value	Comments
Transmission, Visible	90 %	"Transparent" but manufacturer does not quantify.

Processing Properties	Original Value	Comments
Cure Time	15.0 min @Treatment Temp. 165 °C	press cured

Descriptive Properties
Appearance	transparent

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PWACK9254 / 204783

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