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

Wacker ELASTOSIL M 4600 Silicone Rubber

Wacker ELASTOSIL® M 4600 is a two-component, platinum-cured liquid silicone rubber offering excellent mechanical strength, thermal stability up to 180°C, and outstanding transparency. Ideal for medical devices, baby products, and precision molding due to its low viscosity, fast cure, and biocompatibility per ISO 10993. Meets FDA and USP Class VI requirements.
  • wacker elastosil m 4600 silicone rubber_2c05a9d6
  • wacker elastosil m 4600 silicone rubber_2c05a9d6

Features Of Wacker ELASTOSIL M 4600 Silicone Rubber

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

  2. Fast room-temperature vulcanization (RTV) with low shrinkage and minimal by-product formation.

  3. Outstanding thermal stability across a wide operating range (–60 °C to +200 °C).

  4. Excellent electrical insulation properties and resistance to UV, ozone, and weathering.

  5. Low viscosity before curing—ideal for precision casting, potting, and intricate mold replication.

Typical Applications Of Wacker ELASTOSIL M 4600 Silicone Rubber

  1. Electrical and electronic encapsulation for transformers, sensors, and PCB protection.

  2. Industrial gasketing and sealing in automotive and aerospace components.

  3. Prototyping and master model making for investment casting and RTV mold production.

  4. Medical device housings requiring biocompatibility-compliant silicone formulations.

  5. Custom flexible tooling for composite part manufacturing and vacuum forming.

Specifications Of Wacker ELASTOSIL M 4600 Silicone Rubber

Chemical TypePlatinum-cured addition-cure liquid silicone rubber (LSR)
Product FormTwo-component liquid system (Part A + Part B)
AppearanceTranslucent, low-viscosity liquid (Part A); colorless to pale yellow (Part B)
Shore A Hardness (7 days, 23 °C)40 ± 2
Tensile Strength (ISO 37)8.5 MPa (typical)
Elongation at Break (ISO 37)450 % (typical)
Curing Time (23 °C / 50 % RH)Surface dry: ~30 min; fully cured: 24 h
Density (23 °C)1.12 g/cm³ (typical)


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