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

Wacker ELASTOSIL RT 563 Two-Component Silicone Rubber

Wacker ELASTOSIL RT 563 is a two-component addition-curing silicone rubber offering excellent tear strength, low compression set, and outstanding thermal stability. Ideal for precision molding of seals, gaskets, and medical components, it cures rapidly at room temperature or accelerated with mild heat. Known for its high biocompatibility, low viscosity, and reproducible mechanical properties across batches.
  • wacker elastosil rt 563 two component silicone rubber_35cdced1
  • wacker elastosil rt 563 two component silicone rubber_35cdced1

Features Of Wacker ELASTOSIL RT 563 Two-Component Silicone Rubber

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

  2. Fast room-temperature curing without oven post-curing, enabling efficient production cycles.

  3. Outstanding thermal stability and resistance to aging under prolonged exposure to elevated temperatures.

  4. Low compression set ensures reliable sealing performance over extended service life.

  5. Excellent electrical insulation properties compliant with IEC 60243 standards.

Typical Applications Of Wacker ELASTOSIL RT 563 Two-Component Silicone Rubber

  1. Sealing and gasketing in automotive powertrain and EV battery enclosures.

  2. Insulating components for high-voltage connectors and charging systems.

  3. Protective encapsulation of sensitive electronics in industrial control units.

  4. Dynamic seals for pneumatic and hydraulic actuators requiring long-term resilience.

Specifications Of Wacker ELASTOSIL RT 563 Two-Component Silicone Rubber

Chemical TypePlatinum-cured addition-cure silicone rubber
Product FormTwo-component liquid (Part A: base, Part B: catalyst)
AppearanceOpaque white to off-white viscous liquid
Mixing Ratio (A:B) by Weight10:1
Shore A Hardness (7 days, 23 °C)63 ± 3
Tensile Strength (7 days, 23 °C)8.5 MPa (typ.)
Elongation at Break (7 days, 23 °C)320 % (typ.)
Operating Temperature Range−60 °C to +180 °C (continuous)


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