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

Wacker ELASTOSIL RT 623 A B Two-Component Silicone Rubber

Wacker ELASTOSIL RT 623 A/B is a platinum-cured two-component addition-cure silicone rubber offering excellent mechanical properties thermal stability and low compression set ideal for precision molding and encapsulation in automotive medical and electronics applications.
  • wacker elastosil rt 623 a b two component silicone rubber_0b02a245
  • wacker elastosil rt 623 a b two component silicone rubber_0b02a245

Features Of Wacker ELASTOSIL RT 623 A B Two-Component Silicone Rubber

  1. Excellent tear strength and high elongation at break for demanding mechanical performance.

  2. Fast room-temperature vulcanization (RTV) with balanced pot life and demold time.

  3. Outstanding thermal stability across a wide service temperature range (–50 °C to +180 °C).

  4. Low compression set ensures long-term sealing integrity under continuous load.

  5. Good electrical insulation properties and UL 94 HB flammability rating.

Typical Applications Of Wacker ELASTOSIL RT 623 A B Two-Component Silicone Rubber

  1. Automotive gaskets and vibration-damping mounts.

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

  3. Sealing and potting for LED lighting modules and power supplies.

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

  5. Custom molded parts for HVAC, appliance, and industrial equipment.

Specifications Of Wacker ELASTOSIL RT 623 A B Two-Component Silicone Rubber

Chemical TypePlatinum-cured addition-cure liquid silicone rubber (LSR)
Product FormTwo-component (A + B), pourable liquid system
AppearanceComponent A: Transparent to slightly hazy viscous liquid; Component B: Transparent to slightly hazy viscous liquid with catalyst
Mix Ratio (A:B)1:1 by weight
Cure MechanismRoom-temperature addition cure (RTV-2)
Shore A Hardness (7 days, 23 °C)62 ± 3
Tensile Strength (ASTM D412)≥ 8.0 MPa
Elongation at Break (ASTM D412)≥ 350 %


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