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

Wacker ELASTOSIL Solar 3210 Silicone Rubber

Wacker ELASTOSIL Solar 3210 is a two-component, addition-curing 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 service life under harsh outdoor conditions.
  • wacker elastosil solar 3210 silicone rubber_0a4ae1be
  • wacker elastosil solar 3210 silicone rubber_0a4ae1be

Features Of Wacker ELASTOSIL Solar 3210 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 under thermal cycling (-40 °C to +150 °C).

  4. Platinum-catalyzed addition cure system enabling precise, reproducible processing and low shrinkage.

  5. Meets international standards for electrical insulation and fire safety (UL 94 V-0, IEC 61215 compatibility).

Typical Applications Of Wacker ELASTOSIL Solar 3210 Silicone Rubber

  1. Edge sealing of crystalline silicon photovoltaic modules.

  2. Mounting and encapsulation of bifacial solar panels exposed to dual-side irradiation.

  3. Sealing and bonding of junction boxes and connectors in utility-scale solar farms.

  4. Structural adhesive for frameless glass-glass PV modules requiring high transparency and durability.

  5. Weatherproofing gaskets and seals in solar tracking systems and inverters.

Specifications Of Wacker ELASTOSIL Solar 3210 Silicone Rubber

Chemical TypePlatinum-cured addition silicone rubber
Product FormTwo-component liquid (Part A: base, Part B: catalyst)
AppearanceTranslucent, low-viscosity liquid
Primary ApplicationsSolar photovoltaic module sealing and bonding
Key FeaturesUV-stable, electrically insulating, low ionic impurity content
BenefitsExtended service life >25 years under real-world field conditions
Cure MechanismAddition reaction (hydrosilylation), no by-products
Storage Stability≥12 months at ≤25 °C (unopened containers)


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