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

Wacker ELASTOSIL RT 745 Silicone Rubber

Wacker ELASTOSIL® RT 745 is a two-component, addition-curing liquid silicone rubber offering excellent tear strength, low compression set, and outstanding thermal stability. Ideal for precision molding of medical devices, seals, and technical parts requiring biocompatibility and USP Class VI compliance. Fast curing, low viscosity, and high reproducibility ensure reliable industrial processing.
  • wacker elastosil rt 745 silicone rubber_4ad516dd
  • wacker elastosil rt 745 silicone rubber_4ad516dd

Features Of Wacker ELASTOSIL RT 745 Silicone Rubber

  1. High tear strength and excellent elongation for demanding dynamic sealing applications.

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

  3. Outstanding resistance to weathering, UV radiation, and extreme temperatures (−60 °C to +200 °C).

  4. Good adhesion to various substrates including metals, plastics, and glass without primer.

  5. Low viscosity paste formulation enabling easy dispensing, mixing, and air bubble elimination.

Typical Applications Of Wacker ELASTOSIL RT 745 Silicone Rubber

  1. Automotive gasketing and vibration-damping components.

  2. Electrical insulation and encapsulation of sensitive electronic modules.

  3. Industrial sealing of housings, sensors, and control units exposed to harsh environments.

  4. Medical device assembly requiring biocompatibility-compliant silicone elastomers.

  5. Renewable energy systems including solar inverter potting and wind turbine sensor protection.

Specifications Of Wacker ELASTOSIL RT 745 Silicone Rubber

Chemical TypePlatinum-cured addition-cure liquid silicone rubber
Product FormTwo-component paste (Part A + Part B)
AppearanceOpaque, homogenous paste (Part A: white; Part B: translucent)
Mixing Ratio (by weight)1:1
Cure Time (23 °C / 50 % RH)Surface dry in ~30 min; full cure in 24 h
Hardness (Shore A, 7 days)45 ± 3
Tensile Strength (ISO 37)≥ 6.0 MPa
Elongation at Break (ISO 37)≥ 280 %


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