The material selection platform
Plastics & Elastomers
The material selection platform
Plastics & Elastomers
by SpecialChem
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Silopren™ LSR 7090

Silopren™ LSR 7090 by Momentive Performance Materials is a two-component liquid silicone rubber. Offers high transparency, high hardness, low viscosity, fast cure speed and good optical clarity. Exhibits high temperature stability and flowability with excellent UV and blue light stability. Provides resistance to UV-light, micro-crack and high temperature (above 150°C). Shows excellent processability, excellent durability, colorability and excellent color stability. Designed for processing by injection and compression molding. Silopren™ LSR 7090 is used in lenses, light guides, illumination optics, mobile phones, flash lenses, sensing lenses for automotive, electronics, solar, interior and exterior lighting applications. Complies with UL 94 (HB) (File No. E56745) flame rating.
Product Type
Silicone Rubber
Physical Form

Silopren™ LSR 7090 Properties

Physical Properties

Value & Unit
Test Condition
Test Method
67 Pa.s
(Part A, (D=10/s), at 23°C)
17 Pa.s
(Part B, (D=10/s), at 23°C)
42 Pa.s
(Mixed, at 23°C)

Silopren™ LSR 7090 Processing Guidelines

Injection Molding Properties

Value & Unit
Test Condition
Test Method
Mold Temperature
110 - 150 °C
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