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

Wacker ELASTOSIL SOLAR 1109 WHITE One-Component Silicone Sealant

Wacker ELASTOSIL SOLAR 1109 WHITE is a one-component, UV-resistant silicone sealant designed for photovoltaic module assembly. It offers excellent adhesion to glass, aluminum, and backsheet materials, low modulus for stress relief, and long-term weatherability. Fast surface cure, no primer needed, and compliant with IEC 61215/61730 standards for solar applications.
  • wacker elastosil solar 1109 white one component silicone sealant_e1171ebb
  • wacker elastosil solar 1109 white one component silicone sealant_e1171ebb

Features Of Wacker ELASTOSIL SOLAR 1109 WHITE One-Component Silicone Sealant

  1. UV-resistant formulation specifically engineered for long-term outdoor durability in photovoltaic module assembly.

  2. Neutral-cure, acetoxy-free chemistry ensuring no corrosive by-products during cure—safe for sensitive solar cell materials and metallization.

  3. Excellent adhesion to common PV substrates including glass, aluminum frames, EVA encapsulants, and backsheet polymers without primer.

  4. High elasticity and permanent flexibility (≥400% elongation at break) to accommodate thermal cycling and mechanical stress in solar installations.

  5. Fast surface cure under ambient conditions with full depth cure optimized for high-throughput automated dispensing lines.

Typical Applications Of Wacker ELASTOSIL SOLAR 1109 WHITE One-Component Silicone Sealant

  1. Edge sealing of crystalline silicon photovoltaic modules.

  2. Mounting and bonding of junction boxes to module backsheets.

  3. Sealing of frame-to-glass interfaces in bifacial and standard PV panels.

  4. Encapsulation of connectors and cable entries in solar inverters and combiner boxes.

  5. Weatherproofing of structural joints in ground-mounted and rooftop solar mounting systems.

Specifications Of Wacker ELASTOSIL SOLAR 1109 WHITE One-Component Silicone Sealant

Chemical TypeAcetoxy-curing silicone elastomer
Product FormPaste-like, thixotropic one-component sealant
AppearanceOpaque white, homogeneous paste
Primary ApplicationsPhotovoltaic module edge sealing and component bonding
Key FeaturesUV stable, non-corrosive, high elongation, primerless adhesion
Shelf Life12 months unopened at ≤25 °C in original packaging
Cure MechanismMoisture-curing at room temperature
Storage ConditionsDry, cool, and well-ventilated area; avoid freezing


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