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

Wacker ELASTOSIL RT 705 Silicone Rubber

Wacker ELASTOSIL® RT 705 is a two-component, addition-curing liquid silicone rubber renowned for excellent mechanical strength, thermal stability up to 200°C, and outstanding replication fidelity. Ideal for precision casting, medical device prototyping, and industrial molds, it offers low viscosity, air-release properties, and biocompatibility per ISO 10993. Fast curing at room or elevated temperatures ensures high productivity and dimensional accuracy.
  • wacker elastosil rt 705 silicone rubber_ee637140
  • wacker elastosil rt 705 silicone rubber_ee637140

Features Of Wacker ELASTOSIL RT 705 Silicone Rubber

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

  2. Outstanding resistance to weathering, UV radiation, and extreme temperatures (–60 °C to +200 °C).

  3. Low compression set ensuring long-term sealing performance and dimensional stability.

  4. Platinum-catalyzed addition cure system enabling precise control over pot life and cure speed.

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

Typical Applications Of Wacker ELASTOSIL RT 705 Silicone Rubber

  1. Medical devices including respiratory masks, tubing connectors, and implantable component housings.

  2. Automotive gaskets and vibration-damping mounts exposed to under-hood thermal cycling.

  3. Food-contact seals and elastomeric parts for processing equipment meeting FDA 21 CFR 177.2600.

  4. Consumer electronics enclosures requiring soft-touch surfaces and environmental resilience.

  5. Industrial fluid-handling components such as diaphragms and pump valves in aggressive chemical environments.

Specifications Of Wacker ELASTOSIL RT 705 Silicone Rubber

Chemical TypePlatinum-cured addition silicone rubber
Product FormTwo-component liquid (Part A: base, Part B: catalyst)
AppearanceTranslucent, low-viscosity liquid
Shore A Hardness (cured)50 ± 3
Tensile Strength (cured)8.5–10.0 MPa
Elongation at Break (cured)450–550 %
Cure SystemPlatinum-mediated hydrosilylation
Primary ApplicationsMedical, automotive, food processing, electronics


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