National Guard Products GapGuard FireCaulk is a 90-minute fire-rated caulk engineered to seal and protect gaps and joints in wood, metal, and other surfaces. Its durable formulation resists water, oil, and a broad range of chemicals, helping maintain fire containment integrity in demanding commercial and residential applications.
Safe for use in occupied environments, this caulk is non-toxic and appropriate for use around children and pets. It is well-suited for MRO, construction, and safety compliance projects where reliable fire-stopping performance is required.