General Purpose Silicone Sealant

TREMPRO® 644 RTV is a one-part, general purpose, acetoxy silicone sealant.

Basic Uses
  • TREMPRO 644 RTV is specially designed for sealant joints between most nonporous materials such as glass, aluminum, metal and metal alloys.
  • Industrial and residential uses include HVAC, plumbing and kitchen/bath fixtures.
  • TREMPRO 644 RTV may also be used on site where a gun-grade sealant is required.
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  • What is the shelf life of your TREMPRO sealants?

    Most of the sealants have a 12-month shelf life based on the manufacturing date and batch numbers from the tubes or cases.

  • Within what temperature range can the TREMPRO sealants be applied?

    Tremco recommends that our sealants be applied at substrate temperatures of 40°F (5°C) and rising to 120°F (49°C).