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

Wacker ELASTOSIL A234 One-Component Silicone Sealant

Wacker ELASTOSIL A234 is a one-component, platinum-catalyzed silicone sealant offering excellent adhesion to glass, metals and plastics without primer. It cures rapidly at room temperature with low shrinkage, high elasticity and outstanding UV/weather resistance—ideal for demanding industrial bonding and sealing applications.
  • wacker elastosil a234 one component silicone sealant_67647559
  • wacker elastosil a234 one component silicone sealant_67647559

Features Of Wacker ELASTOSIL A234 One-Component Silicone Sealant

  1. Room-temperature vulcanizing (RTV) silicone sealant that cures upon exposure to atmospheric moisture.

  2. Excellent adhesion to common substrates including glass, aluminum, stainless steel, and painted surfaces without primer.

  3. Outstanding resistance to UV radiation, ozone, and extreme temperatures (−60 °C to +180 °C continuous).

  4. Non-corrosive, acetoxy-cure chemistry with low shrinkage and high elasticity after curing.

  5. Good electrical insulation properties and long-term stability under thermal cycling conditions.

Typical Applications Of Wacker ELASTOSIL A234 One-Component Silicone Sealant

  1. Sealing and bonding in automotive lighting assemblies (headlamps, tail lamps).

  2. Encapsulation and potting of electronic components and sensors in harsh environments.

  3. Joint sealing for architectural glazing systems and façade elements.

  4. Assembly sealing in household appliances requiring thermal and weather resistance.

  5. Industrial gasketing and static sealing in HVAC and power electronics enclosures.

Specifications Of Wacker ELASTOSIL A234 One-Component Silicone Sealant

Chemical TypeAcetoxy-cure, one-component, RTV silicone elastomer
Product FormPaste-like, thixotropic paste in cartridge
AppearanceOpaque white or translucent, homogeneous paste
Primary ApplicationsStatic sealing, bonding, encapsulation, gasketing
Key FeaturesMoisture-curing, high elasticity, UV/ozone resistant
BenefitsNo mixing required; easy application; excellent long-term durability
Curing MechanismSurface cure within 24 h; full cure depth ~3 mm/24 h at 23 °C / 50% RH
Storage Stability12 months unopened at ≤25 °C in original packaging


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