Songhan Plastic Technology Co.,Ltd.

Momentive Performance Materials Siloprenâ„¢ LSR 2841 Liquid Silicone Rubber - Good Flex Life

Category Polymer , Thermoset , Rubber or Thermoset Elastomer (TSE) , Silicone , Silicone Rubber
Manufacturer Momentive Performance Materials (Former GE Silicones)
Trade Name Silopren™
Port Shanghai port,China
Trade Terms FOB, CFR, CIF
Payment Terms L/C, T/T, Western Union
Download PDF Momentive Performance Materials Siloprenâ„¢ LSR 2841 Liquid Silicone Rubber - Good Flex Life.pdf
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Material Notes:
This LSR elastomer is a specialty grade, two-component, platinum (addition/heat) curable, and pumpable silicone elastomer that can be molded and cured with very fast cycle times, at elevated temperatures. The molding process allows for complex part geometry and exact dimensions. LSR elastomers are generally suitable for short cycle time injection and full automatic flash-less processing. Color pastes are available to pigmenting addition cure productions of LSR's.All LSR grades are platinum cured materials which are mixed in a 1:1 ratio by weight.Industries and Applications: The Momentive portfolio of products is used for a wide variety of applications in the Automotive, Aviation and Aerospace, Consumer Goods, Consumer Electronics, Healthcare and Energy Industries.LSR 2841 is a Good Flex Life grade LSR.
Physical Properties Metric English Comments
Specific Gravity 1.07 g/cc
1.07 g/cc
Linear Mold Shrinkage 0.027 cm/cm
0.027 in/in
vulcanized 10 sec at 200°C; Without post-cure
0.035 cm/cm
0.035 in/in
vulcanized 10 sec at 200°C then post-cured
Mechanical Properties Metric English Comments
Hardness, Shore A 40
Tensile Strength 6.00 MPa
870 psi
Elongation at Break 550 %
550 %
Tear Strength 21.0 kN/m
120 pli
Die B
Thermal Properties Metric English Comments
Flammability, UL94 HB
Optical Properties Metric English Comments
Transmission, Visible 80 %
80 %
transparent; thickness unknown
Compliance Properties Metric English Comments
FDA Indirect food contact - Rubber articles intended for repeated use - FDA Reg 21CFR177.2600
USP Class VI Yes
USP Class VI methods: Intramuscular implantation, intracutaneous injection, & systematic injection
Processing Properties Metric English Comments
Nozzle Temperature 20.0 °C
68.0 °F
cool nozzle and cylinder to prevent premature vulcanization
Mold Temperature 140 - 230 °C
284 - 446 °F
short vulcanization time required (a few seconds)
Injection Pressure 5.00 - 15.0 MPa
725 - 2180 psi
depends on feed channel
Hold Pressure 5.00 MPa
725 psi
Descriptive Properties Value Comments
Appearance Transparent
BfR product is compositionally compliant
Recommendation XV Silicones; post cured (4h/200°C)
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