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

Wacker ELASTOSIL N2189 One-Component Silicone Sealant

Wacker ELASTOSIL N2189 is a one-component, platinum-cured silicone sealant offering excellent adhesion to glass, metals, and plastics without primers. It cures rapidly at room temperature with low shrinkage, high elasticity, and outstanding UV/weather resistance—ideal for precision bonding and sealing in electronics, optics, and medical devices.
  • wacker elastosil n2189 one component silicone sealant_4177bebb
  • wacker elastosil n2189 one component silicone sealant_4177bebb

Features Of Wacker ELASTOSIL N2189 One-Component Silicone Sealant

  1. Room-temperature vulcanizing (RTV) silicone with excellent adhesion to glass, metals, and plastics without primer.

  2. Neutral-cure chemistry—releases methanol during curing, minimizing corrosion risk on sensitive substrates.

  3. High elasticity and permanent flexibility after full cure, maintaining performance across wide temperature ranges.

  4. Excellent resistance to weathering, UV radiation, and aging under outdoor exposure conditions.

  5. Low volatility and compliant with VOC regulations for industrial and architectural applications.

Typical Applications Of Wacker ELASTOSIL N2189 One-Component Silicone Sealant

  1. Structural and perimeter sealing of insulating glass units (IGUs) in façade and curtain wall systems.

  2. Joint sealing in aluminum and stainless-steel cladding assemblies.

  3. Sealing around windows, skylights, and architectural glazing elements.

  4. Non-structural bonding and sealing in transportation interiors (e.g., rail and bus cabins).

  5. Weatherproofing seals for prefabricated building components and modular construction panels.

Specifications Of Wacker ELASTOSIL N2189 One-Component Silicone Sealant

Chemical TypeAcetoxy-cured silicone polymer (neutral-cure)
Product FormPaste-like, thixotropic sealant in cartridge or sausage pack
AppearanceOpaque white or translucent gel
Primary ApplicationsArchitectural glazing, façade sealing, IGU secondary sealant
Key FeaturesRTV, primerless adhesion, UV stable, low shrinkage
BenefitsLong-term durability, minimal maintenance, ISO 11600 compliant
Curing MechanismMoisture-cured at ambient temperature
Storage Stability12 months unopened at ≤25 °C in dry conditions


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