Wacker Elastosil® LR 3003/50 A/B Liquid Silicone Rubber

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Wacker Elastosil® LR 3003/50 A/B Liquid Silicone Rubber
Categories:	Polymer; Thermoset; Silicone; Silicone Rubber; Liquid Silicone Rubber (LSR)
Material Notes:	Liquid silicone rubbers of the ELASTOSIL® LR 3003 series are paste-like, easily-pigmentable two component compounds with short curing times. Their vulcanizates are noted for their high transparency and excellent mechanical and electrical properties. Properties: Narrow Shore hardness range from 47 to 53 Shore A (50 ± 3 Shore A). The products can be used within a temperature range of - 55 °C to + 210 °C. The addition of heat stabilizers at service temperatures of more than 180 °C is recommended. Application: These grades are particularly suitable for the economical production of large series of injection molded articles. Parts made from ELASTOSIL® LR 3003/50 A/B can be used for technical applications. These articles are also suitable for use in conjunction with foodstuffs. Postcured parts can be used for food contact applications and are suitable for use under the Recommendation "XV. Silicones" of the BfR and FDA § 177.2600 under observance of any given limitations on extractable and volatile substances. Information provided by Wacker Chemie AG.
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Physical Properties	Original Value	Comments

Density	1.13 g/cc	DIN EN ISO 1183-1 A
Viscosity	370000 cP @Shear Rate 10.0 1/s	DIN 53019
	912000 cP @Shear Rate 0.900 1/s	DIN 53019

Mechanical Properties	Original Value	Comments
Hardness, Shore A	50	DIN 53505
Tensile Strength at Break	9.90 MPa	DIN 53504 S 1
Elongation at Break	480 %	DIN 53504 S 1
Rebound	62 %	DIN 53512
Tear Strength	165 pli	ASTM 624 B
Compression Set	13 % @Temperature 175 °C, Time 79200 sec	post cure 6h/200°C; DIN ISO 815-B

Electrical Properties	Original Value	Comments
Volume Resistivity	5.00e+15 ohm-cm	DIN IEC 93
Dielectric Constant	2.8 @Frequency 50 Hz	DIN VDE 0303
Dielectric Strength	23.0 kV/mm @Thickness 1.00 mm	DIN IEC 243-2
Dissipation Factor	0.00020 @Frequency 50 Hz	DIN VDE 0303

Thermal Properties	Original Value	Comments
Maximum Service Temperature, Air	210 °C	with heat stabilizer
Minimum Service Temperature, Air	-55.0 °C

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

Processing Properties	Original Value	Comments
Cure Time	5.00 min @Treatment Temp. 165 °C	in press, postcuring for 4h/200°C (in ventilated air)

Descriptive Properties
Appearance	transparent

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PWACK9092 / 204621

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