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Red Devil 0846DX F-Seal 181 is a fiber-reinforced, water-based duct sealant for indoor/outdoor use. Suitable for pressure sealing all types of HVAC duct systems including metal, fiberglass ductboard, and flexduct. It is UL 181 A-M & B-M certified and exceeds all SMACNA Pressure and Sealing Classes.
The sealant is fast-drying, low in VOCs, and provides excellent adhesion and flexibility for vents, air conditioners, and HVAC appliances.
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