URJA FIRESTOP SEALANT is developed for sealing applications in various areas (COMMERTIAL OR GROUPED RESIDENTIAL CONSTRUCTION) and in any FIREPRONE areas. URJA FIRESTOP SEALANT can be used in systems where dynamic movement is expected: plumbing; HVAC; bath and dryer vents; metallic pipes; non-metallic pipes, conduits and tubing; insulated pipes; electrical and electronic cabling; concrete, gypsum, metal ductwork; wood floors. URJA FIRESTOP SEALANT is a fast setting, elastomeric compound designed as a joint sealant for high velocity air conditioning ducts installed indoors. It may be used with or without reinforcing tapes. It has a mild "paint tape" odor and applies cleanly without stringing. Mechanically fasteners of the type and number normally used for duct assemblies are required to provide rigidity to the duct system. SPECIAL FEATURES: Zero percent VOC · Totally Eco- friendly product. ï?· Specially developed for green building projects. Releases only water vapor