Ply-Seal XE Joint Systems offer a convenient, durable waterproof expansion joint seal. They can be field-welded to provide a monolithic waterproof joint. Ply-Seal & Ply-Seal XE joint seals have a working range of 30% tension, 60% compression, 100% horizontal and vertical movements, and are permanently bonded to the substrates with Ply-Bonder, a two-component industrial epoxy adhesive. Polyset. 800-765-9738.