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Mastix™ Butyl Tape
This versatile, trimmable, end-lap sealing tape joins metal to metal, and seals around windows, doors, roof vents, stacks, access doors and other penetration points – wherever you need to seal metal to metal.
Non-staining and permanently flexible, Mastix stays in place with no melting or oozing, even in extreme heat.
Rolls are 3/32″ x 3/8″ x 45′