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

Wacker ELASTOSIL Solar 1200 Silicone Rubber

Wacker ELASTOSIL Solar 1200 is a high-purity, platinum-cured liquid silicone rubber specifically engineered for photovoltaic module encapsulation. It offers exceptional UV resistance, thermal stability up to 200°C, low compression set, and outstanding adhesion to glass and EVA. Ideal for solar panel edge sealing and junction box potting due to its rapid cure, low viscosity, and long service life under harsh outdoor conditions.
  • wacker elastosil solar 1200 silicone rubber_8c00033c
  • wacker elastosil solar 1200 silicone rubber_8c00033c

Features Of Wacker ELASTOSIL Solar 1200 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 ensures reliable sealing integrity over extended service life at elevated temperatures.

  4. Flame-retardant formulation meeting UL 94 HB classification for enhanced safety compliance.

  5. Ready-to-use two-component addition-curing system with precise 1:1 mixing ratio and extended pot life.

Typical Applications Of Wacker ELASTOSIL Solar 1200 Silicone Rubber

  1. Edge sealing of crystalline silicon photovoltaic (PV) modules.

  2. Frame adhesion and bonding in solar panel assembly.

  3. Sealing of junction boxes and cable entries in PV systems.

  4. Encapsulation of bypass diodes and electrical interconnects.

  5. Weatherproofing gaskets for solar mounting structures and trackers.

Specifications Of Wacker ELASTOSIL Solar 1200 Silicone Rubber

Chemical TypePlatinum-catalyzed addition-curing silicone rubber
Product FormTwo-component liquid system (Part A + Part B)
AppearanceTranslucent, low-viscosity liquid
Mixing Ratio (A:B)1:1 by weight
Cure Temperature Range23–150 °C
Shore A Hardness (7 days, 23 °C)38–42
Tensile Strength (ASTM D412)≥ 5.0 MPa
Elongation at Break (ASTM D412)≥ 250 %


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