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

Wacker ELASTOSIL M 4670 A B Two-Component Silicone Rubber

Wacker ELASTOSIL® M 4670 A/B is a two-component addition-curing liquid silicone rubber offering excellent flow, low viscosity, and high tear strength. Ideal for precision casting, medical device molding, and intricate prototypes. Features fast demolding, biocompatibility per ISO 10993, and outstanding thermal stability from −65 °C to +200 °C.
  • wacker elastosil m 4670 a b two component silicone rubber_0c6cf70c
  • wacker elastosil m 4670 a b two component silicone rubber_0c6cf70c

Features Of Wacker ELASTOSIL M 4670 A B Two-Component Silicone Rubber

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

  2. Fast room-temperature curing (RTV-2) with precise 1:1 mixing ratio by weight or volume.

  3. Outstanding thermal stability, maintaining performance from –60 °C to +180 °C.

  4. Low compression set and superior resistance to aging, ozone, and UV radiation.

  5. Biocompatibility compliant with ISO 10993-5 and USP Class VI for medical-grade suitability.

Typical Applications Of Wacker ELASTOSIL M 4670 A B Two-Component Silicone Rubber

  1. Medical device components including seals, gaskets, and housings for diagnostic equipment.

  2. Automotive sensor encapsulation and vibration-damping mounts requiring long-term reliability.

  3. Consumer electronics protective gaskets and interface pads for waterproof enclosures.

  4. Industrial automation parts such as membrane switches and tactile feedback elements.

  5. Food-contact compliant seals and liners in processing machinery (subject to local regulatory approval).

Specifications Of Wacker ELASTOSIL M 4670 A B Two-Component Silicone Rubber

Chemical TypePlatinum-cured addition-cure silicone rubber
Product FormTwo-component liquid system (Part A and Part B)
AppearancePart A: translucent, low-viscosity liquid; Part B: translucent, low-viscosity liquid
Mixing Ratio (by weight)1 : 1
Curing MechanismRoom-temperature vulcanization (RTV-2), no by-products
Shore A Hardness (7 days, 23 °C)60 ± 3
Tensile Strength (7 days, 23 °C)8.5 MPa (min)
Elongation at Break (7 days, 23 °C)320 % (min)


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