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

Wacker ELASTOSIL Solar 1101 Silicone Rubber

Wacker ELASTOSIL® Solar 1101 is a two-component, addition-curing liquid silicone rubber specifically engineered for photovoltaic module encapsulation. It offers exceptional UV resistance, thermal stability up to 200°C, low ionic impurities, and outstanding adhesion to glass/EVA/backsheet—ensuring long-term reliability in solar panel manufacturing.
  • wacker elastosil solar 1101 silicone rubber_ee826369
  • wacker elastosil solar 1101 silicone rubber_ee826369

Features Of Wacker ELASTOSIL Solar 1101 Silicone Rubber

  1. High UV and weather resistance for long-term outdoor performance in solar applications.

  2. Excellent adhesion to glass, aluminum, and common photovoltaic module substrates without primer.

  3. Low compression set and superior elasticity retention after prolonged thermal cycling (−40 °C to +90 °C).

  4. Platinum-cured, addition-type silicone offering fast, controllable curing with minimal by-products.

  5. UL 94 V-0 rated for flame retardancy — meets critical safety requirements for rooftop and ground-mount PV systems.

Typical Applications Of Wacker ELASTOSIL Solar 1101 Silicone Rubber

  1. Edge sealing of crystalline silicon photovoltaic modules.

  2. Backsheet bonding and frame attachment in solar panel assembly.

  3. Encapsulation of junction boxes and electrical connectors on PV modules.

  4. Sealing and potting of solar inverters and power electronics housings.

  5. Weatherproofing gaskets for bifacial and agrivoltaic mounting structures.

Specifications Of Wacker ELASTOSIL Solar 1101 Silicone Rubber

Chemical TypePlatinum-catalyzed addition-cure silicone rubber
Product FormTwo-component liquid (Part A: base; Part B: catalyst)
AppearanceTranslucent, low-viscosity liquid (Part A); colorless to pale yellow liquid (Part B)
Mix Ratio (by weight)10 : 1 (A:B)
Cure Temperature Range20 °C to 120 °C
Shore A Hardness (7 days, 23 °C)35 ± 3
Tensile Strength (ASTM D412)8.5 MPa (typical)
Elongation at Break (ASTM D412)320 % (typical)


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