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

Wacker ELASTOSIL RT 707 W Two-Component Silicone Rubber

Wacker ELASTOSIL RT 707 W is a two-component addition-cure silicone rubber offering excellent mechanical strength, thermal stability up to 180°C, and low compression set. Ideal for demanding industrial molding, encapsulation, and sealing applications requiring high precision and reproducibility. FDA-compliant, platinum-catalyzed, and easy to process with adjustable pot life.
  • wacker elastosil rt 707 w two component silicone rubber_04b0cdb5
  • wacker elastosil rt 707 w two component silicone rubber_04b0cdb5

Features Of Wacker ELASTOSIL RT 707 W Two-Component Silicone Rubber

  1. Platinum-catalyzed addition-cure system ensuring low shrinkage and excellent dimensional stability.

  2. High transparency and exceptional optical clarity for demanding aesthetic applications.

  3. Excellent resistance to yellowing under UV exposure and long-term thermal aging (up to 150 °C).

  4. Low viscosity components enabling easy mixing, degassing, and high-fidelity replication of fine details.

  5. Good adhesion to common substrates including glass, metals, and select engineering plastics without primers.

Typical Applications Of Wacker ELASTOSIL RT 707 W Two-Component Silicone Rubber

  1. Optical encapsulation of LEDs and miniature light guides in automotive and architectural lighting.

  2. Prototyping and small-batch production of transparent gaskets, seals, and soft-touch overlays.

  3. Medical device components requiring biocompatibility support (ISO 10993-compliant formulations available upon request).

  4. High-precision casting of decorative elements, jewelry molds, and sensor housings.

Specifications Of Wacker ELASTOSIL RT 707 W Two-Component Silicone Rubber

Chemical TypePlatinum-catalyzed addition-cure silicone rubber
Product FormTwo-component liquid (Part A: base, Part B: catalyst)
AppearanceWater-white, transparent liquids
Mixing Ratio (by weight)10 : 1 (A : B)
Shore A Hardness (cured, 7 days @ 23 °C)70 ± 3
Tensile Strength (cured, ISO 37)8.5 MPa (typical)
Elongation at Break (cured, ISO 37)220 % (typical)
Primary ApplicationsOptical encapsulation, precision casting, transparent sealing


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