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TOP490N Silicone Sealant

TOP490N Silicone Sealant

Neutral cure. High-modulus performance. Weather-resistant formulation.

TOP490N is a one-part, neutral-cure silicone sealant designed for weatherproofing joints in glazing and façade systems.

Available in:
North AmericaLatin AmericaEurope, Middle East & AfricaIndia & PakistanSoutheast AsiaAustralia & New ZealandJapanChina

Reliable perimeter sealing for glazing and façade applications.

TOP490N Silicone Sealant is formulated to deliver consistent adhesion and elasticity in construction applications that require weather resistance and material compatibility. The sealant cures upon exposure to atmospheric moisture, forming a durable, rubber-like seal.

Its high-modulus properties help it maintain joint integrity under movement and external stress. It is well-suited for field-applied sealing where long-term retention of elasticity and adhesion is important.

Performance

Material Compatibility

  • Neutral-cure formulation – Bonds to metals, glass, coated surfaces, concrete, and more
  • High-modulus performance – Designed for static joints requiring strength and limited flexibility
  • Primerless adhesion to many substrates – Reduces preparation time in many applications

Environmental Resistance

  • Resists UV, ozone, and rain – Suitable for exposed exterior joints
  • Thermal stability – Maintains flexibility across typical outdoor temperature ranges
  • Cures to a flexible elastomer – Helps preserve sealing performance over time

Ease of Use

  • One-part, ready-to-use – No mixing or special tools required
  • Available in cartridges for standard dispensers – Convenient for field use
Product Video
Finishes

TOP490N Silicone Sealant is available in:

Translucent
White
Black
Grey
Dark Brown
Available Sizes

TOP490N Silicone Sealant is available in:

  • 280 ml / 285 g cartridges

View our other Weatherseal Sealants
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