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

Wacker ELASTOSIL RT 772 Two-Component Silicone Rubber

Wacker ELASTOSIL RT 772 is a two-component addition-cure silicone rubber offering excellent mechanical strength thermal stability and low compression set ideal for precision molding sealing and encapsulation in automotive medical and industrial applications.
  • wacker elastosil rt 772 two component silicone rubber_e5b23432
  • wacker elastosil rt 772 two component silicone rubber_e5b23432

Features Of Wacker ELASTOSIL RT 772 Two-Component Silicone Rubber

  1. High tear strength and excellent elongation at break for durable, flexible molded parts.

  2. Low viscosity components ensure easy mixing and excellent air release during processing.

  3. Fast room-temperature cure without the need for heat or catalysts—ideal for low-energy production.

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

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

Typical Applications Of Wacker ELASTOSIL RT 772 Two-Component Silicone Rubber

  1. Medical device components including seals, gaskets, tubing connectors, and wearable sensor housings.

  2. Prototyping and low-volume production of functional elastomeric parts in R&D labs.

  3. Sealing and encapsulation of sensitive electronics in automotive and industrial control units.

  4. Custom molds for dental, orthopedic, and aesthetic medical models requiring dimensional stability.

Specifications Of Wacker ELASTOSIL RT 772 Two-Component Silicone Rubber

Chemical TypePlatinum-cured addition-cure silicone rubber
Product FormTwo-component liquid system (Part A: base, Part B: catalyst)
Appearance (Uncured)Translucent, low-viscosity liquids (both components)
Mixing Ratio (by weight)10 : 1 (A:B)
Cure Time (at 23 °C / 50% RH)~24 hours to full physical properties
Hardness (Shore A, cured)70 ± 3
Tensile Strength (cured)≥ 8.0 MPa
Elongation at Break (cured)≥ 350 %


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