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

Wacker ELASTOSIL RT 563 Silicone Rubber

Wacker ELASTOSIL RT 563 is a two-component, addition-cure liquid silicone rubber (LSR) offering excellent flowability, low viscosity, and high tear strength. Ideal for precision molding of medical devices, seals, and automotive parts, it cures rapidly at elevated temperatures with minimal shrinkage and outstanding biocompatibility per ISO 10993.
  • wacker elastosil rt 563 silicone rubber_abb0d112
  • wacker elastosil rt 563 silicone rubber_abb0d112

Features Of Wacker ELASTOSIL RT 563 Silicone Rubber

  1. Two-component, addition-cure liquid silicone rubber with excellent flowability and low viscosity for precise mold filling.

  2. Fast curing at room temperature or accelerated heat cure, enabling high throughput in industrial production.

  3. Outstanding mechanical properties including high tear strength and elongation at break after vulcanization.

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

  5. Low compression set and superior long-term stability across wide temperature range (–60 °C to +200 °C).

Typical Applications Of Wacker ELASTOSIL RT 563 Silicone Rubber

  1. Medical device components such as seals, gaskets, tubing connectors, and implantable housings.

  2. Pharmaceutical processing equipment parts requiring repeated sterilization (autoclave, gamma, EtO).

  3. Soft-touch overmolding for handheld diagnostic instruments and wearable health monitors.

  4. Custom-molded elastomeric parts for drug delivery systems and lab-on-a-chip devices.

  5. High-precision encapsulation of sensitive electronic sensors in biomedical environments.

Specifications Of Wacker ELASTOSIL RT 563 Silicone Rubber

Chemical TypePlatinum-catalyzed addition-cure liquid silicone rubber
Product FormTwo-component (Part A + Part B), supplied separately
AppearanceTransparent to translucent viscous liquid
Primary ApplicationsMedical, pharmaceutical, and life science device manufacturing
Key FeaturesBiocompatible, low extractables, autoclavable, no by-products on cure
Shore A Hardness (Cured)55 ± 3
Tensile Strength (Cured)8.5–10.5 MPa
Elongation at Break (Cured)≥ 450 %


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