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

Wacker ELASTOSIL M 4642 A B Two-Component Silicone Rubber

Wacker ELASTOSIL® M 4642 A/B is a platinum-cured two-component addition-cure silicone rubber offering excellent mechanical strength, thermal stability up to 200°C, and low compression set. Ideal for precision molding of medical devices, seals, and technical parts requiring biocompatibility and reproducible curing.
  • wacker elastosil m 4642 a b two component silicone rubber_36d3eabc
  • wacker elastosil m 4642 a b two component silicone rubber_36d3eabc

Features Of Wacker ELASTOSIL M 4642 A B Two-Component Silicone Rubber

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

  2. Fast room-temperature curing without requiring heat or pressure.

  3. Outstanding resistance to aging, UV radiation, and extreme temperatures (–60 °C to +180 °C).

  4. Low compression set ensuring long-term sealing performance and shape recovery.

  5. Excellent electrical insulation properties and compliance with UL 94 V-0 flammability rating.

Typical Applications Of Wacker ELASTOSIL M 4642 A B Two-Component Silicone Rubber

  1. Automotive gaskets and vibration-damping mounts.

  2. Electrical encapsulation and potting of sensors, connectors, and power modules.

  3. Industrial sealing components for HVAC, pumps, and fluid handling systems.

  4. Medical device housings and biocompatible interface parts (ISO 10993-compliant variants available upon request).

Specifications Of Wacker ELASTOSIL M 4642 A B Two-Component Silicone Rubber

Chemical TypePlatinum-cured addition-cure silicone rubber
Product FormTwo-component liquid system (Part A: base, Part B: catalyst)
AppearancePart A: translucent viscous liquid; Part B: translucent low-viscosity liquid
Mixing Ratio (A:B) by Weight10:1
Shore A Hardness (7 days, 23 °C)42 ± 2
Tensile Strength (ASTM D412)8.5 MPa min
Elongation at Break (ASTM D412)450% min
Processing Temperature Range15 °C to 30 °C (optimal cure)


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

Your Name *

Your Email *

Your Phone

Country

Your Message *