From Armaflex
HT Armaflex pipe insulation is a flexible, closed cell EPDM rubber insulation material with resistance to UV radiation for thermal insulation of pipes, vessels, ducts and solar panels, motor vehicles, hot gas lines, steam and dual temperature lines. Key Features HT Armaflex Glue (HT625) Pipe Insulation Adhesive. For use with Armaflex HT Outdoor/High Temperature/Solar Insulation. Specially formulated for a wide range of temperatures and applications. Water-tight bonding of HT Armaflex and Armaflex DuoSolar insulation systems. For operating temperatures up to +150 C. High performance, one component industrial grade adhesive. Low-viscosity air-drying contact adhesive.