DOWSIL SGS 1199 10oz Tube

DOWSIL 1199 Silicone Glazing Sealant is a high-performance, one-part, neutral-cure silicone RTV (Room Temperature Vulcanizing) sealant formulated for industrial window and door fabrication applications. This advanced glazing sealant is engineered to meet the demanding requirements of modern fenestration, where speed, durability, and compatibility with multiple substrates are critical to performance and productivity.

Designed specifically for automated production environments, DOWSIL 1199 offers rapid cure times and consistent tooling characteristics, enabling it to be used in both manual and robotic bead applications. It is particularly well-suited for backbedding, cap bead, toe bead, and heel bead sealing, making it a reliable choice for commercial window units, curtain wall systems, and residential glazing assemblies.

This sealant adheres aggressively without the need for primers to a broad range of common construction materials, including glass, wood, aluminum, vinyl, and fiberglass, providing robust structural integrity and long-term resistance to moisture ingress, UV degradation, and temperature extremes. It can accommodate ±25% joint movement once cured, maintaining adhesion and elasticity even under dynamic stress, vibration, or seasonal expansion and contraction.

With a fast tack-free time of 20–30 minutes and complete cure typically achieved within 24 hours under normal conditions, DOWSIL 1199 minimizes production bottlenecks. Its low-slump, non-sagging formulation ensures neat, professional results with minimal waste or rework. The cured sealant forms a durable, flexible, weatherproof barrier that resists cracking, chalking, or shrinking over time.

Comes with an 18-month shelf life, it’s ideal for professional glazing and curtain wall applications requiring a reliable, durable seal.