Polyurethane sealant is a material containing a component material and packed in 600 ml sizes. Polyurethane sealant normally used to fill the joint at the precast concrete, masonry, concrete joints, etc.
Polyurethane sealant, when dry, will form a strong kind of rubber and elastic and can withstand the bond connection is caused by engine vibrations or other loads. In concrete joints ( especially for construction joints) or sparing pipe which is directly affected by water/ rain, the polyurethane sealant can be used as waterproof coating to fill a gap/ hole of concrete.