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

Wacker ELASTOSIL M 4370 Silicone Rubber

Wacker ELASTOSIL® M 4370 is a platinum-cured liquid silicone rubber (LSR) offering excellent flowability, low viscosity, and outstanding mechanical properties after vulcanization. Ideal for precision injection molding of medical devices, baby care items, and automotive seals due to its biocompatibility, thermal stability, and reproducible curing behavior.
  • wacker elastosil m 4370 silicone rubber_533b2e10
  • wacker elastosil m 4370 silicone rubber_533b2e10

Features Of Wacker ELASTOSIL M 4370 Silicone Rubber

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

  2. Fast room-temperature vulcanization (RTV) with platinum-catalyzed addition cure chemistry.

  3. Low viscosity before curing enables easy mixing, degassing, and mold filling.

  4. Outstanding thermal stability and long-term performance across –60 °C to +200 °C.

  5. Biocompatibility compliant with ISO 10993–5 and USP Class VI for medical device support.

Typical Applications Of Wacker ELASTOSIL M 4370 Silicone Rubber

  1. Medical-grade seals and gaskets for diagnostic equipment and drug delivery systems.

  2. Soft-touch overmolding on plastic or metal components in healthcare and consumer electronics.

  3. Prototyping and low-volume production of flexible functional parts via vacuum casting.

  4. Encapsulation of sensitive electronic sensors requiring thermal and electrical insulation.

Specifications Of Wacker ELASTOSIL M 4370 Silicone Rubber

Chemical TypePlatinum-catalyzed addition-curing silicone rubber
Product FormTwo-component liquid system (Part A + Part B)
Appearance (Uncured)Translucent, low-viscosity liquid
Primary ApplicationsMedical devices, precision molding, encapsulation, soft-touch components
Key FeaturesRTV cure, high biocompatibility, excellent flow, minimal shrinkage
Shore A Hardness (7 days, 23 °C)40 ± 2
Tensile Strength (DIN ISO 37)8.5 MPa (typical)
Elongation at Break (DIN ISO 37)450 % (typical)


Get in Touch with ERICW
Let competitive chemical materials go global.

Your Name *

Your Email *

Your Phone

Country

Your Message *