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

Wacker ELASTOSIL M 4635 A B Two-Component Silicone Rubber

Wacker ELASTOSIL® M 4635 A/B is a platinum-cured, two-component addition-cure silicone rubber offering excellent mechanical strength, thermal stability up to 180°C, low compression set, and outstanding transparency—ideal for precision molding, medical devices, and optical applications requiring biocompatibility and USP Class VI compliance.
  • wacker elastosil m 4635 a b two component silicone rubber_e6405505
  • wacker elastosil m 4635 a b two component silicone rubber_e6405505

Features Of Wacker ELASTOSIL M 4635 A B Two-Component Silicone Rubber

  1. Platinum-catalyzed addition-cure system enabling low shrinkage and excellent dimensional stability.

  2. High transparency and exceptional optical clarity suitable for light-transmitting applications.

  3. Excellent biocompatibility and compliance with ISO 10993-5 (cytotoxicity) and USP Class VI standards.

  4. Fast room-temperature or elevated-temperature curing with adjustable pot life via temperature control.

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

Typical Applications Of Wacker ELASTOSIL M 4635 A B Two-Component Silicone Rubber

  1. Medical device components including seals, gaskets, and housings for diagnostic equipment.

  2. Optical encapsulation and lens molding for LED lighting and sensor protection.

  3. Soft-touch overmolding on thermoplastic substrates in consumer electronics and automotive interiors.

  4. Prototyping and small-batch production of precision silicone parts using vacuum casting or injection molding.

  5. Food-contact compliant seals and gaskets in processing equipment (subject to local regulatory approval).

Specifications Of Wacker ELASTOSIL M 4635 A B Two-Component Silicone Rubber

Chemical TypePlatinum-catalyzed addition-curing silicone rubber
Product FormTwo-component liquid system (Part A + Part B)
AppearanceViscous, transparent to translucent liquids
Mixing Ratio (A:B)1:1 by weight
Cure MechanismAddition reaction (hydrosilylation)
Shore A Hardness (Cured)35 ± 3
Density (23 °C)Approx. 1.12 g/cm³ (Part A), 1.10 g/cm³ (Part B)
Primary ApplicationsMedical, optical, and industrial soft elastomer components


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