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

Wacker ELASTOSIL M 4511 Two-Component Silicone Rubber

Wacker ELASTOSIL® M 4511 is a two-component addition-cure silicone rubber offering excellent mechanical strength, thermal stability up to 180°C, and low compression set. Ideal for precision molding, gaskets, and seals in automotive and medical applications. It cures rapidly at room temperature or with mild heat, delivers high tear resistance, and complies with ISO 10993 biocompatibility standards.
  • wacker elastosil m 4511 two component silicone rubber_a4ae726c
  • wacker elastosil m 4511 two component silicone rubber_a4ae726c

Features Of Wacker ELASTOSIL M 4511 Two-Component Silicone Rubber

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

  2. Low viscosity before curing enables high-flow casting and precise replication of fine details.

  3. Platinum-catalyzed addition cure system ensures minimal shrinkage and outstanding dimensional stability.

  4. Biocompatibility compliant with ISO 10993–5 and USP Class VI for medical-grade applications.

  5. Good resistance to UV radiation, ozone, and aging without protective additives.

Typical Applications Of Wacker ELASTOSIL M 4511 Two-Component Silicone Rubber

  1. Medical device components including seals, gaskets, and tubing connectors.

  2. Prototyping and low-volume production of precision silicone parts via vacuum casting.

  3. Encapsulation of sensitive electronics requiring thermal management and electrical insulation.

  4. Food-contact compliant molds and tooling for bakery and confectionery production.

  5. Custom elastomeric parts for automotive sensors and interior trim assemblies.

Specifications Of Wacker ELASTOSIL M 4511 Two-Component Silicone Rubber

Chemical TypePlatinum-cured addition silicone rubber
Product FormTwo-component liquid system (Part A + Part B)
AppearanceTransparent, low-viscosity liquid (Part A); translucent liquid catalyst (Part B)
Mixing Ratio (by weight)10:1 (A:B)
Cure ModeRoom temperature or accelerated heat cure (e.g., 2–4 h at 80 °C)
Shore A Hardness (cured)45 ± 2
Tensile Strength (ISO 37)Approx. 5.5 MPa
Elongation at Break (ISO 37)Approx. 350%


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