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

Wacker ELASTOSIL M 4470 Two-Component Silicone Rubber

Wacker ELASTOSIL® M 4470 is a two-component, addition-curing silicone rubber offering excellent tear strength, low compression set, and high thermal stability. Ideal for precision molding of medical devices, automotive seals, and industrial gaskets. It cures rapidly at room or elevated temperatures with precise 1:1 mixing ratio and outstanding dimensional accuracy.
  • wacker elastosil m 4470 two component silicone rubber_6166f0c1
  • wacker elastosil m 4470 two component silicone rubber_6166f0c1

Features Of Wacker ELASTOSIL M 4470 Two-Component Silicone Rubber

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

  2. Fast room-temperature curing (RTV-2) with low mixed viscosity for easy processing and air bubble release.

  3. Outstanding thermal stability and long-term resistance to aging, UV, and ozone exposure.

  4. Biocompatibility tested in accordance with ISO 10993–5 and USP Class VI standards.

  5. Low compression set and consistent elastic recovery after prolonged deformation.

Typical Applications Of Wacker ELASTOSIL M 4470 Two-Component Silicone Rubber

  1. Medical device components including seals, gaskets, and wearable sensor housings.

  2. Pharmaceutical manufacturing parts such as pump diaphragms and fluid-contact tubing connectors.

  3. High-precision soft-touch grips and ergonomic interfaces for diagnostic equipment.

  4. Custom molded parts for life science instrumentation requiring chemical inertness and sterilizability.

  5. Encapsulation and potting of sensitive electronic modules in regulated healthcare environments.

Specifications Of Wacker ELASTOSIL M 4470 Two-Component Silicone Rubber

Chemical TypePlatinum-cured addition-cure silicone rubber
Product FormTwo-component liquid system (Part A + Part B)
Appearance (Mixed)Translucent to slightly opaque viscous liquid
Shore A Hardness (7 days, 23°C)40 ± 2
Tensile Strength (ISO 37)8.5 MPa (typical)
Elongation at Break (ISO 37)550 % (typical)
Curing SystemRoom temperature or accelerated heat cure (e.g., 60°C for 2 h)
ComplianceMeets ISO 10993–5 (cytotoxicity), USP Class VI, and FDA 21 CFR 177.2600


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