TremPro® 635 utilizes a solvent-free technology, which represents technical advances over existing polyurethane systems. In addition, TremPro 635 demonstrates excellent adhesion to a wide variety of substrates, including ferrous, non-ferrous metals, kynar finishes, composite materials and many plastic rubber substrates.
TremPro 635 is a high performance, low-to-medium modulus, onecomponent, gun grade polyurethane sealant. The sealant cures to a flexible rubber when exposed to atmospheric moisture.
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).