ASMACO 2677 Neutral Cure Silicone Sealant

ASMACO 2677 is a premium neutral-cure silicone sealant engineered to provide robust, long-lasting adhesion for both interior and exterior applications. As a specialized secondary sealant, it plays a critical role in the assembly of insulating glass units (IGUs), ensuring an airtight and watertight barrier that maintains thermal efficiency and prevents moisture ingress. Its neutral cure chemistry makes it safe for use on sensitive surfaces, including glass, metals, and painted substrates, without causing corrosion or discoloration.

This sealant exhibits exceptional weather resistance, withstanding UV radiation, temperature fluctuations, and rain exposure without cracking, shrinking, or losing elasticity. It cures to a flexible, durable rubber that accommodates movement in building facades and window frames, maintaining a seamless seal over time. The product is easy to apply and offers a smooth finish, making it ideal for professional glazing and industrial sealing tasks.

• Neutral-cure formula prevents corrosion on metals and discoloration on sensitive substrates.
• Specifically formulated as a secondary sealant for insulating glass unit assembly.
• Superior weather and UV resistance for durable outdoor performance.
• Excellent adhesion to glass, anodized aluminum, and other common building materials.
• Flexible cured rubber ensures long-term sealing integrity under thermal expansion and contraction.