The material selection platform
Plastics & Elastomers
The material selection platform
Plastics & Elastomers
by SpecialChem
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Silopren™ LSR 2070

Silopren™ LSR 2070 by Momentive Performance Materials is a biocompatible, two-component liquid silicone rubber, sterilizable with ethylene oxide, steam and gamma radiation. It is not readily combustible and it does not melt or drip. It is easily pigmented with LSR color pastes. Offers long service life at dynamic stress, high thermal stability, excellent stability and flexibility at low temperature. Exhibits excellent processability, excellent dielectric behaviour over a wide range of temperature, good rubber-like properties, aging resistance, high stability to ozone and UV light. Designed for processing by injection molding. Silopren™ LSR 2070 is used in elastomeric articles like sealing elements, O-rings, stoppers, keypads, bellows, pressure cooker parts and vibration dampers. Complies with USP Class VI, ISO 10993, KTW, WRAS (BS 6920), BfR recommendation XV "Silicones", DVGW (W 270) and FDA 21 CFR 177.2600 regulations.
Product Type
Silicone Rubber
Physical Form

Silopren™ LSR 2070 Properties

Physical Properties

Value & Unit
Test Condition
Test Method
1000 Pa.s
(gamma = 10 s-1 at 20°C)
DIN 53019
Specific Gravity
1.14 g/cm3
(Vulcanization: 10 min at 175°C, Post cure: 4 hrs at 200°C)
DIN 53 479 A

Silopren™ LSR 2070 Processing Guidelines

Injection Molding Properties

Value & Unit
Test Condition
Test Method
Mold Temperature
170 - 230 °C
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