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Plastics & Elastomers
The material selection platform
Plastics & Elastomers
by SpecialChem
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Silopren™ LSR 2670

Silopren™ LSR 2670 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 high reactivity, long service life at dynamic stress, high thermal stability, excellent stability and flexibility at low temperature. Exhibits low viscosity, short cycle times, excellent dielectric behaviour over a wide range of temperature, good rubber-like properties, high stability to ozone and UV light. Shows resistance to aging and high tear. It reduces vulcanization temperature while maintaining a standard crosslinking rate. Designed for processing by injection molding. Silopren™ LSR 2670 is used in elastomeric articles like sealing elements, O-rings, stoppers, diaphragms, keypads, bellows, catheters, pacifiers, baby teats, respiratory devices, vibration dampers, nose pads, switch cover, breast shiels, air vent flaps, cable connectors and parts of medical technical equipment. 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 2670 Properties

Physical Properties

Value & Unit
Test Condition
Test Method
550 Pa.s
(gamma = 10 s-1 at 20°C)
DIN 53018
Specific Gravity
1.13 g/cm3
(Vulcanization: 10 min at 175°C, Post cure: 4 hrs at 200°C)
DIN 53 479 A

Silopren™ LSR 2670 Processing Guidelines

Injection Molding Properties

Value & Unit
Test Condition
Test Method
Mold Temperature
140 - 200 °C
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