Lejell 220 is a multifunction gun grade polyurethane based construction sealant, it is of low modulus and cures by reaction with atmospheric moisture to form a soft rubber like material with moderate elasticity and hight adhesion strength.. polyurethane construction sealant for sealing cracks, construction joints, doors, windows, roofing, gutters, sills, basements, vents, skylights, wall penetrations, and precast panels.
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