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

Wacker ELASTOSIL M 4400 Silicone Rubber

Wacker ELASTOSIL® M 4400 is a two-component addition-curing liquid silicone rubber renowned for excellent mechanical strength, thermal stability up to 200°C, and outstanding flowability for intricate mold replication. Ideal for medical device encapsulation, automotive gaskets, and precision soft-touch components requiring biocompatibility and low compression set.
  • wacker elastosil m 4400 silicone rubber_4ea176d6
  • wacker elastosil m 4400 silicone rubber_4ea176d6

Features Of Wacker ELASTOSIL M 4400 Silicone Rubber

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

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

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

  4. Excellent electrical insulation properties across wide temperature and frequency ranges.

  5. Platinum-catalyzed, addition-cure system offering precise control over cure kinetics and minimal by-products.

Typical Applications Of Wacker ELASTOSIL M 4400 Silicone Rubber

  1. Automotive engine compartment seals and gaskets exposed to high temperatures and oil contact.

  2. Industrial fluid handling components including diaphragms, membranes, and pump housings.

  3. Medical device parts requiring biocompatibility (ISO 10993-compliant when properly processed).

  4. Electrical insulation components such as cable jackets, bushings, and encapsulation materials.

  5. Food-contact compliant seals and gaskets in processing equipment (FDA 21 CFR 177.2350 compliant).

Specifications Of Wacker ELASTOSIL M 4400 Silicone Rubber

Chemical TypePlatinum-catalyzed addition-cure liquid silicone rubber (LSR)
Product FormTwo-component liquid system (Part A + Part B)
AppearanceTranslucent, low-viscosity liquid (Part A); translucent liquid catalyst (Part B)
Shore A Hardness (Cured)40 ± 2
Tensile Strength (Cured)≈ 7.0 MPa
Elongation at Break (Cured)≈ 450 %
Density (Uncured)≈ 1.12 g/cm³
Cure Temperature Range110–170 °C (time-dependent)


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