SikaSil WS-290 Silicone Sealant per 1.5 Gallon Unit

Sikasil WS-290 is a one-part, neutral-curing, and ultra low-modulus silicone sealant. This than cures to a durable, flexible building sealant. Sikasil WS-290 performs exceptionally well under dynamic conditions due to its ultra-low modulus, high extension/compression, recovery properties and strong adhesion to most building materials.

Meets the requirements of ASTM C-920, Type S, Grade NS, Class 100/50, Use NT, M, G, A, O; TT-S-00230C, Type II, Class A; TT-S-001543A, Class A; CAN/CGSB-1 9.1 3-M87, AAMA 808.3.

• Unaffected by most atmospheric conditions
• Excellent resistance to UV and Ozone exposure
• Non-staining
• Joint movement +100/-50 %
• Excellent adhesion
• One-component
• Excellent gunnability in all temperatures
• Ultra low Modulus

Applications

• Sealing expansion and control joints in precast concrete panels and metal curtain walls
• As a weatherseal in glass to glass butt joint glazing
• As a weatherseal in nonstructural glazing applications, including cap, toe and heel beads
• Exterior Insulation Finish Systems (EIFS) and numerous other areas requiring a high-performance sealant