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

Wacker ELASTOSIL N199 One-Component Silicone Sealant

Wacker ELASTOSIL N199 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/thermal stability. Ideal for precision bonding and sealing in electronics, optics, and medical device assembly.
  • wacker elastosil n199 one component silicone sealant_41d4eab6
  • wacker elastosil n199 one component silicone sealant_41d4eab6

Features Of Wacker ELASTOSIL N199 One-Component Silicone Sealant

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

  2. Fast surface cure at room temperature with deep-section curing under ambient humidity conditions.

  3. Outstanding long-term elasticity and permanent flexibility — maintains >300% elongation after aging.

  4. Excellent resistance to weathering, UV radiation, ozone, and extreme temperatures (–50 °C to +180 °C).

  5. Low volatile organic compound (VOC) content, compliant with stringent indoor air quality requirements.

Typical Applications Of Wacker ELASTOSIL N199 One-Component Silicone Sealant

  1. Sealing and bonding in architectural glazing systems, including structural and perimeter joints for curtain walls.

  2. Electronics encapsulation and potting where electrical insulation and thermal stability are critical.

  3. Gasketing and sealing of HVAC components exposed to fluctuating thermal and environmental loads.

  4. Automotive lighting assemblies requiring optical clarity, adhesion to polycarbonate, and vibration resistance.

  5. Medical device assembly where biocompatibility-supporting materials and cleanroom-compatible processing are required.

Specifications Of Wacker ELASTOSIL N199 One-Component Silicone Sealant

Chemical TypeCondensation-curing, neutral-cure silicone elastomer
Product FormPaste-like, thixotropic one-component sealant
AppearanceOpaque white or translucent, homogeneous paste
Primary ApplicationsHigh-performance sealing, bonding, and encapsulation in demanding industrial environments
Key FeaturesAcetoxy-free, low-VOC, high elasticity, UV-stable, wide service temperature range
BenefitsNo corrosion on metals, no odor during cure, excellent adhesion without primer on many substrates
Cure MechanismMoisture-cured via silanol condensation (releases methanol)
Shelf Life12 months in unopened original packaging at ≤25 °C


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