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.. Lejell 210 is suitable for most building joints, including perimeter caulking of doors and windows. *Expansion joints. *Joints in pre-cast panel. *External walling,curtain wall joints *skylights, smoke vents *other structural sealing for areas with structure movement
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