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Specialty Compounds RTP Company

Momentive Performance Materials Silopren™ LSR 2631 Liquid Silicone Rubber - Non Post Cure / Low Compression Set
Categories: Polymer; Thermoset; Rubber or Thermoset Elastomer (TSE); Silicone; Silicone Rubber; Liquid Silicone Rubber (LSR)

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 2631 is a non post cure, low compression set grade.

Vendors: No vendors are listed for this material. Please click here if you are a supplier and would like information on how to add your listing to this material.
 
Physical PropertiesMetricEnglishComments
Specific Gravity 1.10 g/cc1.10 g/cc
Linear Mold Shrinkage 0.027 cm/cm0.027 in/invulcanized 10 sec at 200°C; Without post-cure
 0.035 cm/cm0.035 in/invulcanized 10 sec at 200°C then post-cured
 
Mechanical PropertiesMetricEnglishComments
Hardness, Shore A 2929
Tensile Strength 8.00 MPa1160 psi
Elongation at Break 850 %850 %
Tear Strength 30.0 kN/m171 pliDie B
Compression Set 25 %25 %Non post-cured
 
Optical PropertiesMetricEnglishComments
Transmission, Visible 20 %20 %translucent; thickness unknown
 
Processing PropertiesMetricEnglishComments
Nozzle Temperature 20.0 °C68.0 °Fcool nozzle and cylinder to prevent premature vulcanization
Mold Temperature 140 - 230 °C284 - 446 °Fshort vulcanization time required (a few seconds)
Injection Pressure 5.00 - 15.0 MPa725 - 2180 psidepends on feed channel
Hold Pressure 5.00 MPa725 psi
 
Descriptive Properties
AppearanceTranslucent

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 view all the property values for this datasheet as they were originally entered into MatWeb.

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PGE8V724 / 108984

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