Hardcast FlexGrip 550 Indoor/Outdoor Water Based Duct Sealant – Gray 1 Gal (Copy)

Flex-Grip 550 is an all purpose, indoor/outdoor, water based, fiber-free, duct sealant for use on all types of metal duct, glass fiber duct board, and flex duct, as well as duct fabric and flexible tubing runouts. Distinguished by its ability to accommodate minor vibration and movement, Flex-Grip 550 stays flexible to save call-back labor. Flex-Grip 550’s excellent coverage rates and easy spray and brush-on application provide low installed cost. Gray, 1 gallon pail.