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

Wacker ELASTOSIL M 4541 Two-Component Silicone Rubber

Wacker ELASTOSIL® M 4541 is a two-component addition-curing silicone rubber offering excellent mechanical strength, thermal stability up to 180°C, and outstanding release performance. Ideal for precision casting, mold making, and industrial prototyping, it delivers low shrinkage, high tear resistance, and easy demolding. Compliant with FDA 21 CFR 177.2600 for food-contact applications.
  • wacker elastosil m 4541 two component silicone rubber_7070b137
  • wacker elastosil m 4541 two component silicone rubber_7070b137

Features Of Wacker ELASTOSIL M 4541 Two-Component Silicone Rubber

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

  2. High tear strength and outstanding elongation at break for demanding dynamic applications.

  3. Low compression set ensuring long-term sealing performance under sustained load.

  4. Platinum-catalyzed addition cure system offering precise control, no by-products, and excellent shelf life.

  5. Good resistance to weathering, UV radiation, ozone, and aging without surface degradation.

Typical Applications Of Wacker ELASTOSIL M 4541 Two-Component Silicone Rubber

  1. Automotive gaskets and vibration-damping mounts for powertrain and chassis systems.

  2. Industrial sealing components in pumps, valves, and fluid-handling equipment.

  3. Electrical insulation parts for high-voltage connectors and sensor housings.

  4. Medical device components requiring biocompatibility (ISO 10993-compliant formulations available upon request).

Specifications Of Wacker ELASTOSIL M 4541 Two-Component Silicone Rubber

Chemical TypePlatinum-catalyzed addition-curing silicone rubber
Product FormTwo-component liquid system (Part A: base, Part B: catalyst)
Appearance (Mixed)Translucent to slightly opaque viscous liquid
Mixing Ratio (by weight)10 : 1 (A:B)
Cure Conditions (typical)25 °C / 24 h or 100 °C / 10 min
Shore A Hardness (cured)45 ± 3
Tensile Strength (cured)≥ 7.0 MPa
Elongation at Break (cured)≥ 450 %


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