Tremco Willseal Seismic HS Horizontal Expansion Seal

📐 Project-Quoted Product — North Vancouver, BC. Expansion joint systems are sized to your joint width, depth and run length and priced per project. Send us your joint schedule and we confirm pricing and lead time within one business day. Call 250-233-3000 or request a project quote. Request a Project Quote Willseal Seismic HS — Horizontal Expansion Seal Pre-compressed, silicone-faced foam seal for horizontal seismic and construction joints | Brand: Tremco (Willseal) | Model: Willseal Seismic HS Willseal Seismic HS is the horizontal counterpart to Willseal Seismic: a pre-compressed, open micro-cell polyurethane foam seal with acrylic impregnation and a factory-applied silicone face in standard Spectrem colours. Browse the full Tremco range at Canopus Supply. Professional note: Seismic HS handles ±50% movement at rapid rates in horizontal joints from 1/2 in. to 4 in., with a maximum compression set of 2.5%. Performance Highlights Movement Capability ±50% at rapid rates Joint Sizes 1/2 in. to 4 in. (6.5 ft sticks, custom available) Compression Set 2.5% max Tensile / Elongation 21 psi min / 125% ±20% (ASTM D3574) Acoustics STC 54 Thermal Conductivity 0.05 W/m·°C Typical Applications Horizontal construction joints Retrofit and seismic joints Precast floor-to-wall joints Exterior panel systems Limitations Avoid contact with hydrocarbon solvents and corrosive chemicals; confirm against the current TDS. Substrates must be clean, dry and sound; confirm against the current TDS. Health & Safety The Safety Data Sheet for Willseal Seismic HS is aligned with GHS requirements. Refer to the manufacturer's Safety Data Sheet for complete information. Purchasing Note: All sales are intended for professional and trade purchasers. Expansion joint products are ordered to project-specific sizes — confirm joint width, depth, movement class, quantity and delivery requirements when requesting your quote. Product use and installation are the responsibility of the purchaser and installer. Sizing an expansion joint? Contact Canopus Supply — 250-233-3000 Tremco — Professional Sealants & Waterproofing Systems Technical information is provided for professional reference only. Product selection, joint sizing, substrate preparation, application and final performance remain the responsibility of the purchaser, installer and project specifier. Always confirm against the current TDS, SDS, project specification and site conditions before use. Available at Canopus Supply — North Vancouver, BC. Authorized distributor in British Columbia.