US-based world leader in flexible spacer systems for insulating glass (GIG), TruSeal Technologies Inc., recently introduced the second product in its new family of hot-melt butyl and polyisobutylene (PIB) IG sealants. Named EdgeTherm, the new product family features high performance, gun grade IG sealants for manufacturing flexibility. The second product in the EdgeTherm line is PIB-H1, a high-viscosity, high strength, 100% solids sealant system. The product is based on a PIB polymer formulated to impart reinforcement, resist degradation from ultraviolet light, and provide low moisture permeability. With its high-viscosity formula, says TruSeal, PIB-H1 resists shearing in large, heavy lites of glass and retains flexibility through a wide temperature range to compensate for thermal movement of IG units.
