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

Wacker ELASTOSIL E43 N One-Component Silicone Sealant

Wacker ELASTOSIL E43 N is a one-component, neutral-cure silicone sealant offering excellent adhesion to glass, metals and plastics without priming. It cures at room temperature with ambient moisture to form flexible, durable elastomeric seals resistant to weathering, UV and temperature extremes from −40 °C to +150 °C. Ideal for construction, automotive and industrial bonding applications.
  • wacker elastosil e43 n one component silicone sealant_1a02554a
  • wacker elastosil e43 n one component silicone sealant_1a02554a

Features Of Wacker ELASTOSIL E43 N One-Component Silicone Sealant

  1. Neutral-cure, acetoxy-free formulation ensures excellent compatibility with sensitive substrates including metals, plastics, and painted surfaces.

  2. Excellent adhesion without primer on common construction and industrial materials such as glass, aluminum, ceramics, and rigid PVC.

  3. Outstanding resistance to weathering, UV radiation, ozone, and extreme temperatures (–40 °C to +150 °C continuous service).

  4. Low modulus elasticity provides high movement capability (±25 % joint movement) while maintaining long-term seal integrity.

  5. Ready-to-use one-component system with moisture-curing mechanism — no mixing required and simple application via standard caulking gun.

Typical Applications Of Wacker ELASTOSIL E43 N One-Component Silicone Sealant

  1. Sealing of curtain wall and façade joints in commercial and high-rise building construction.

  2. Glazing applications for structural and non-structural bonding of insulating glass units (IGUs) and architectural glazing.

  3. Joint sealing in transportation manufacturing, including bus, train, and marine interior/exterior assemblies.

  4. Industrial equipment enclosures requiring durable, vibration-resistant seals against dust and moisture ingress.

  5. Sealing of HVAC ductwork, lighting fixtures, and electrical housings where chemical resistance and fire-safe performance are critical.

Specifications Of Wacker ELASTOSIL E43 N One-Component Silicone Sealant

Chemical TypeNeutral-cure, addition-cured silicone elastomer
Product FormPaste-like, thixotropic paste in cartridge (300 mL or 600 mL)
AppearanceOpaque, uniform paste; available in transparent, white, black, and grey
Primary ApplicationsBuilding façades, glazing, transportation interiors, industrial enclosures
Key FeaturesPrimerless adhesion, neutral cure, high UV stability, low modulus
Shore A Hardness (7 days, 23 °C/50 % RH)28 ± 3
Tensile Strength (7 days)≥ 1.8 MPa
Joint Movement Capability±25 % (Class 25 specified per ISO 11600)


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