Waterbase-Mastic

ULTRASEAL 970 is a fibrous, interior/exterior grade duct sealant for sheet metal, fiberglass and flexible ductwork. High-strength and non-flammable, ULTRASEAL 970 is designed for high, medium and low pressure, and high velocity HVAC systems. ULTRASEAL 970 is easily applied and forms a permanent, flexible seal.

VERSA-GRIP 181 is a premium grade, versatile, all purpose 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. VERSA-GRIP incorporates a built-in fiber reinforcement for exceptional strength, with UV inhibitors for outdoor use. UL 181A-M listed / UL 181B-M listed.