Purpose Butyl Sealant

ALSEAL Butyl Tape is an extruded, ever-tacky and pressure-sensitive gasket sealant with good adhesion strength. It can form an instant seal against water, air or dust, and remain permanently soft. It is ideal for filling gaps and sealing joints such as those on bolt-on duct flanges and circular ducts in HVAC systems, air-conditioner casings, roofing and cladding systems, and caravan roofs and panels.