The everbuild evbheat everflex heat mate silicone is a high modulus reactive curing silicone sealant specifically designed for high temperature applications evbheat cures quickly to reduce dirt pick up it remains permanently flexible forming a weather tight rubber like seal and it conforms to the performance requirements of bs 5889 type b everbuild evbheat has a good range of applications from a gasket sealant for joints and assemblies which must be resistant to high temperatures in ducting meta