Guangzhou Eric Wei Chemical Co., Ltd.
Guangzhou Eric Wei Chemical Co., Ltd.

Wacker ELASTOSIL M 4645 A B Two-Component Silicone Rubber

Wacker ELASTOSIL® M 4645 A/B is a platinum-cured, two-component addition-cure silicone rubber offering excellent mechanical strength, thermal stability up to 180°C, low compression set, and outstanding transparency—ideal for precision molding in medical, automotive, and consumer electronics applications.
  • wacker elastosil m 4645 a b two component silicone rubber_ea576f8b
  • wacker elastosil m 4645 a b two component silicone rubber_ea576f8b

Features Of Wacker ELASTOSIL M 4645 A B Two-Component Silicone Rubber

  1. High tear strength and excellent elongation at break for demanding mechanical performance.

  2. Fast room-temperature curing (RTV-2) with precise 1:1 mixing ratio by weight or volume.

  3. Outstanding thermal stability across –60 °C to +180 °C continuous service range.

  4. Low compression set and superior resilience for long-term sealing and dynamic applications.

  5. Biocompatibility compliant with ISO 10993–5 and USP Class VI for medical-grade use.

Typical Applications Of Wacker ELASTOSIL M 4645 A B Two-Component Silicone Rubber

  1. Medical device components including tubing, gaskets, and wearable sensor housings.

  2. Precision liquid silicone rubber (LSR) molds for automotive fluid management systems.

  3. Food-contact approved seals and gaskets in processing equipment and packaging machinery.

  4. Electrical insulation parts requiring dielectric stability and flame-retardant behavior.

  5. Consumer health & beauty devices requiring skin-safe, hypoallergenic elastomeric interfaces.

Specifications Of Wacker ELASTOSIL M 4645 A B Two-Component Silicone Rubber

Chemical TypePlatinum-cured addition-cure silicone rubber
Product FormTwo-component liquid system (Part A + Part B)
Appearance (Uncured)Part A: Translucent viscous liquid; Part B: Translucent viscous liquid
Mixing Ratio1:1 by weight or volume
Curing MechanismRoom-temperature vulcanization (RTV-2), accelerated by heat
Shore A Hardness (Cured)45 ± 3
Tensile Strength (Cured)≈ 7.0 MPa
Elongation at Break (Cured)≈ 350 %


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