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

Wacker ELASTOSIL R 6550 Two-Component Silicone Rubber

Wacker ELASTOSIL® R 6550 is a two-component addition-curing silicone rubber offering excellent mechanical strength, thermal stability up to 200°C, and outstanding replication fidelity for precision molding. Ideal for industrial encapsulation, soft tooling, and medical device prototyping. Fast curing, low viscosity, and biocompatibility-compliant per ISO 10993.
  • wacker elastosil r 6550 two component silicone rubber_c7cc6e70
  • wacker elastosil r 6550 two component silicone rubber_c7cc6e70

Features Of Wacker ELASTOSIL R 6550 Two-Component Silicone Rubber

  1. High tear strength and excellent elongation at break for demanding mechanical performance.

  2. Fast room-temperature vulcanization (RTV) with low mixed viscosity for easy processing and air bubble elimination.

  3. Outstanding thermal stability and long-term aging resistance from –60 °C to +180 °C.

  4. Excellent electrical insulation properties and low dielectric loss across wide frequency ranges.

  5. Biocompatibility compliant with ISO 10993-5 and USP Class VI for medical-grade applications.

Typical Applications Of Wacker ELASTOSIL R 6550 Two-Component Silicone Rubber

  1. Encapsulation and potting of sensitive electronic components and power modules.

  2. Manufacturing of precision medical devices, including implantable sensor housings and diagnostic equipment seals.

  3. Prototyping and low-volume production of flexible industrial gaskets and vibration-damping mounts.

  4. Tooling and mold-making for composite parts due to high dimensional stability and release performance.

  5. Sealing and bonding in automotive lighting systems and EV battery module interfaces.

Specifications Of Wacker ELASTOSIL R 6550 Two-Component Silicone Rubber

Chemical TypePlatinum-catalyzed addition-cure silicone rubber
Product FormTwo-component liquid system (Part A: base, Part B: catalyst)
AppearanceTransparent, low-viscosity liquids (Part A and Part B separately)
Mix Ratio by Weight10 : 1 (A:B)
Cure Time (23 °C / 50 % RH)≈ 24 hours to full cure; surface tack-free after ≈ 4–6 hours
Shore A Hardness (7 days, 23 °C)50 ± 3
Tensile Strength (ISO 37)≈ 7.5 MPa
Elongation at Break (ISO 37)≈ 320 %


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