Gorilla Glue Heavy-Duty Steel Epoxy Adhesive, 1 oz,4330101 | GorillaWeld is an incredibly strong, heavy-duty two part adhesive. The tough, steel bond epoxy formula has a 4250 psi bond strength and sets in just 10 mins. GorillaWeld is waterproof and versatile, creating a long lasting, permanent bond to metal, plastics, concrete, ceramics, PVC, fiberglass and more.