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

Wacker ELASTOSIL RT 773 Silicone Rubber

Wacker ELASTOSIL RT 773 is a two-component platinum-cured liquid silicone rubber offering excellent mechanical strength, thermal stability up to 200°C, and outstanding transparency. Ideal for medical devices, baby products, and precision molds, it cures rapidly at room temperature with low shrinkage and superior biocompatibility per ISO 10993.
  • wacker elastosil rt 773 silicone rubber_7f184999
  • wacker elastosil rt 773 silicone rubber_7f184999

Features Of Wacker ELASTOSIL RT 773 Silicone Rubber

  1. High tear strength and excellent elongation at break for demanding dynamic applications.

  2. Platinum-catalyzed addition-cure system ensuring low shrinkage and precise dimensional stability.

  3. Good compression set resistance after prolonged exposure to elevated temperatures.

  4. Biocompatibility tested per ISO 10993-5 and USP Class VI, suitable for medical device components.

  5. Low viscosity before curing enables efficient flow into complex molds and thin-walled geometries.

Typical Applications Of Wacker ELASTOSIL RT 773 Silicone Rubber

  1. Medical tubing and catheters requiring flexibility and kink resistance.

  2. Seals and gaskets for pharmaceutical processing equipment.

  3. Encapsulants for sensitive electronic sensors in healthcare devices.

  4. Soft-touch grips and ergonomic housings for diagnostic instruments.

  5. Custom-molded components for wearable health monitoring systems.

Specifications Of Wacker ELASTOSIL RT 773 Silicone Rubber

Chemical TypePlatinum-cured liquid silicone rubber (LSR)
Product FormTwo-component (Part A + Part B) liquid system
AppearanceTranslucent, low-viscosity liquid
Shore A Hardness (7 days, 23 °C)70 ± 2
Tensile Strength (7 days, 23 °C)8.5 MPa min
Elongation at Break (7 days, 23 °C)450 % min
Curing Temperature Range100–150 °C
Primary ApplicationsMedical devices, pharmaceutical equipment, wearable electronics


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