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

Wacker ELASTOSIL Solar 2202 Silicone Rubber

Wacker ELASTOSIL Solar 2202 is a two-component, addition-cure liquid silicone rubber engineered for photovoltaic module encapsulation. It offers exceptional UV resistance, thermal stability up to 200°C, low compression set, and outstanding adhesion to glass/EVA/backsheet. Ideal for solar panel lamination due to its fast cure, low viscosity, and long pot life.
  • wacker elastosil solar 2202 silicone rubber_eff718b5
  • wacker elastosil solar 2202 silicone rubber_eff718b5

Features Of Wacker ELASTOSIL Solar 2202 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 outstanding thermal stability across -40 °C to +150 °C operating range.

  4. Platinum-cured, addition-type formulation with low volatile organic compound (VOC) emission.

  5. Good electrical insulation properties and compliance with UL 94 V-0 flammability rating.

Typical Applications Of Wacker ELASTOSIL Solar 2202 Silicone Rubber

  1. Edge sealing of photovoltaic (PV) modules for protection against moisture ingress and delamination.

  2. Frame adhesion and bonding in crystalline silicon and thin-film solar panel assembly.

  3. Encapsulation of junction boxes and cable entry points in solar inverters and mounting systems.

  4. Sealing and gasketing for solar tracking systems and rooftop mounting hardware.

  5. Structural bonding of glass-glass bifacial PV modules requiring high transparency and durability.

Specifications Of Wacker ELASTOSIL Solar 2202 Silicone Rubber

Chemical TypePlatinum-catalyzed addition-cure silicone rubber
Product FormTwo-component liquid system (Part A: base, Part B: catalyst)
AppearanceTranslucent, low-viscosity liquid (Part A); colorless to pale yellow liquid (Part B)
Primary ApplicationsPhotovoltaic module edge sealing, frame bonding, and junction box encapsulation
Key FeaturesUV-stable, low shrinkage, excellent adhesion to clean glass and anodized aluminum
BenefitsExtended service life under cyclic thermal and humidity stress; RoHS and REACH compliant
Cure MechanismRoom temperature or accelerated heat cure (e.g., 80 °C for 30 min)
Shore A Hardness (7 days, 23 °C/50% RH)45–50


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