SF 685 ShurMASTIC? Butyl Foil Tape - Silver Printed - 17 mil - 2in x 100ft - 1 Case (24 Rolls)
ShurMASTIC? butyl foil tape for indoor or outdoor use to seal Class 1 Flex Duct, sheet metal and duct wrap vapor barriers, and is also approved for subgrade application on PVC-coated duct. SF 685 is a linered, paintable foil mastic on a roll that's tested in accordance with UL 723 and delivers permanent, airtight and water-resistant seals in temperatures up to 200 F.
Contains no asbestos, CFCs or PCBs
Indoor/outdoor mastic foil tape
Linered
Non-flammable, butyl rubber adhesive
Paintable with paint recommended for aluminum
Stays supple and forms a permanent bond to substrate
Tested in accordance with UL 723
Waterproof backing
