Learn MoreThe 3M Scotch Weld EC-3587 BA Class B-14 is a two-part polyurethane that cures at room temperature or with heat to a tough, impact-resistant material. It has excellent adhesion to many metal and plastic substrates. The EC-3587 Class B-14 has a worklife of 5-20 minutes at 73F (23C). It can be used as structural adhesive, void filler, or as a fairing compound.