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

Wacker ELASTOSIL RT 705 Two-Component Silicone Rubber

Wacker ELASTOSIL® RT 705 is a two-component addition-cure silicone rubber offering excellent tear strength, low compression set, and outstanding thermal stability. It cures rapidly at room temperature or accelerated with mild heat, delivering high elasticity and dimensional stability for precision molds, prototypes, and industrial sealing applications.
  • wacker elastosil rt 705 two component silicone rubber_bea917f0
  • wacker elastosil rt 705 two component silicone rubber_bea917f0

Features Of Wacker ELASTOSIL RT 705 Two-Component Silicone Rubber

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

  2. Fast room-temperature vulcanization (RTV) with balanced pot life and cure speed.

  3. Low viscosity components ensure easy mixing, degassing, and mold filling.

  4. Excellent thermal stability and long-term aging resistance from –60 °C to +180 °C.

  5. Good adhesion to various substrates including metals, plastics, and glass without primers.

Typical Applications Of Wacker ELASTOSIL RT 705 Two-Component Silicone Rubber

  1. Prototyping and low-volume production of functional elastomeric parts.

  2. Manufacturing of seals, gaskets, and vibration-damping elements in industrial equipment.

  3. Encapsulation and potting of sensitive electronic components and sensors.

  4. Medical device prototyping and non-implantable silicone parts compliant with ISO 10993-5.

  5. Artistic casting, special effects prosthetics, and museum-grade replication.

Specifications Of Wacker ELASTOSIL RT 705 Two-Component Silicone Rubber

Chemical TypePlatinum-cured addition-cure silicone rubber
Product FormTwo-component liquid system (Part A and Part B)
Appearance (Mixed)Translucent, low-viscosity paste
Mixing Ratio (by weight)1:1
Shore A Hardness (7 days, 23 °C)50 ± 3
Tensile Strength (7 days, 23 °C)7.0 MPa (typ.)
Elongation at Break (7 days, 23 °C)450 % (typ.)
Operating Temperature Range–60 °C to +180 °C (continuous)


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