Duct Seal

Duct Seal, available through Launch 3 Telecom, is a pliable, non-hardening compound used to form a tight seal around exothermic welding molds during grounding and bonding installations. This sealant helps control molten metal flow, prevents material leakage, and ensures a clean, reliable weld connection. Ideal for electrical, telecom, utility, and industrial grounding work, duct seal supports safe, repeatable exothermic connections that meet performance and compliance requirements.

Our selection includes high-quality duct seal blocks designed to remain flexible across a wide range of temperatures and environmental conditions. The compound is easy to mold by hand, adheres securely to mold surfaces, and resists cracking, drying, or chemical breakdown. Whether used for copper grounding rods, bonding straps, grounding grids, telecom shelters, or substation installations, duct seal is an essential accessory for controlled exothermic welding procedures.

As a trusted telecom and electrical hardware distributor, Launch 3 Telecom supplies duct seal alongside a complete range of grounding and exothermic welding products. In addition to duct seal, we offer exothermic molds, weld metal, ignition tools, clamps, grounding rods, connectors, and copper grounding bars to support full system installations and maintenance projects. Depend on Launch 3 Telecom for reliable materials that ensure secure and professional-grade grounding results.