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

Wacker ELASTOSIL RT 773 Two-Component Silicone Rubber

Wacker ELASTOSIL RT 773 is a two-component addition-curing silicone rubber from Wacker’s ELASTOSIL RT series offering excellent mechanical strength thermal stability and low compression set ideal for demanding industrial molding applications.
  • wacker elastosil rt 773 two component silicone rubber_a094ca5f
  • wacker elastosil rt 773 two component silicone rubber_a094ca5f

Features Of Wacker ELASTOSIL RT 773 Two-Component Silicone Rubber

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

  2. Fast room-temperature curing without oven post-curing, enabling efficient production cycles.

  3. Outstanding thermal stability with continuous service temperature range from –60 °C to +180 °C.

  4. Low compression set ensuring long-term sealing performance under sustained load.

  5. Excellent electrical insulation properties and UL 94 V-0 flammability rating.

Typical Applications Of Wacker ELASTOSIL RT 773 Two-Component Silicone Rubber

  1. Sealing and gasketing in automotive powertrain and EV battery modules.

  2. Insulating encapsulation of electronic control units (ECUs) and sensors.

  3. Dynamic seals for industrial hydraulic and pneumatic systems.

  4. Medical device components requiring biocompatibility per ISO 10993–5 and USP Class VI.

Specifications Of Wacker ELASTOSIL RT 773 Two-Component Silicone Rubber

Chemical TypePlatinum-cured addition-cure silicone rubber
Product FormTwo-component liquid system (Part A + Part B)
AppearanceTranslucent, low-viscosity liquid (Part A); translucent liquid (Part B)
Mix Ratio (A:B) by Weight1:1
Shore A Hardness (Cured, 7 days @ 23 °C)70 ± 3
Tensile Strength (ASTM D412)≥ 9.0 MPa
Elongation at Break (ASTM D412)≥ 350 %
Compression Set (22 h @ 150 °C, ASTM D395 Method B)≤ 25 %


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