Sikasil WS-290 Ultra Low Modulus, Neutral Cure Silicone Sealant, Limestone, 20oz Sausage

Sikasil WS-290 Ultra Low Modulus, Neutral Cure Silicone Sealant, Limestone, 20oz Sausage

Sikasil® WS-290 is a one-part, neutral-curing, ultra low-modulus, low to no bleed silicone sealant that 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. Sikasil® WS-290 accommodates long-term movement of +100/-50 % in properly designed joints and is particularly well suited for use in Exterior Insulation Finish Systems (EIFS). 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-19.13-M87.

Product Features

• Ultra low modulus
• Unaffected by most atmospheric conditions
• Excellent resistance to UV and Ozone exposure
• Non-staining to most porous substrates
• Joint movement +100/-50 %
• Excellent adhesion to most substrates and surfaces
• One-component, moisture-curing
• Excellent gunnability in all temperatures
• Meets the requirements of ASTM C920, Type S, Grade NS, Class 100/50, Use NT, M, G, A, O
• SWRI validated acc. to ASTM C719 (No. 623-SIK290)
• Tested acc. to ASTM C1248 for staining on porous substrates
• Federal specification TT-S-00230C, Type II, Class A
• Canadian Standard CAN/CGSB 19.13-M87

Uses

• For 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.