TREMPRO® 645 is a high performance, single-component, medium-modulus, neutral-cure silicone sealant. TREMPRO 645 cures to a flexible rubber when exposed to moisture present in the air.
Most of the sealants have a 12-month shelf life based on the manufacturing date and batch numbers from the tubes or cases.
Tremco recommends that our sealants be applied at substrate temperatures of 40°F (5°C) and rising to 120°F (49°C).
