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

Wacker ELASTOSIL M 4511 Silicone Rubber

Wacker ELASTOSIL® M 4511 is a two-component, addition-curing liquid silicone rubber (LSR) offering excellent mechanical strength, thermal stability up to 200°C, and outstanding flow properties for precision injection molding of medical, automotive, and consumer parts.
  • wacker elastosil m 4511 silicone rubber_8a77761d
  • wacker elastosil m 4511 silicone rubber_8a77761d

Features Of Wacker ELASTOSIL M 4511 Silicone Rubber

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

  2. Fast room-temperature vulcanization (RTV) with low shrinkage and minimal by-products.

  3. Outstanding resistance to weathering, UV radiation, and extreme temperatures (–60 °C to +200 °C).

  4. Good adhesion to common substrates including metals, glass, and plastics without primer.

  5. Low viscosity paste formulation enabling precise dispensing and smooth surface finish.

Typical Applications Of Wacker ELASTOSIL M 4511 Silicone Rubber

  1. Automotive gaskets and vibration-damping seals for engine and chassis components.

  2. Electrical insulation and potting of sensors, connectors, and control units.

  3. Industrial enclosures requiring environmental protection against moisture and dust (IP65/IP67).

  4. Medical device housings and non-implantable components compliant with ISO 10993-5.

  5. Consumer electronics sealing for wearables, smart home devices, and portable power systems.

Specifications Of Wacker ELASTOSIL M 4511 Silicone Rubber

Chemical TypeCondensation-curing, acetoxy-terminated silicone rubber
Product FormPaste, two-component (Part A: base; Part B: catalyst)
AppearanceOff-white to light gray, homogeneous paste
Shore A Hardness (7 days, 23 °C)45 ± 3
Tensile Strength (7 days, 23 °C)5.2 MPa (min)
Elongation at Break (7 days, 23 °C)380 % (min)
Cure Time (surface dry)~15 minutes (23 °C, 50 % RH)
Operating Temperature Range–60 °C to +200 °C (continuous)


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