Our strongest epoxy, this Ultimate formula has a 4,250 PSI bond strength and sets in just 10 minutes. Gorilla Epoxy Ultimate is also waterproof and versatile, creating a long lasting, permanent bond to metal, plastics, concrete, ceramics, PVC, fiberglass and more! Details: Dries black 0.85 fl. oz. (25 mL) Permanent 10 minute set time 100% waterproof Multi-use Store in a cool dark place, keep out of direct sunlight Note: Not recommended for use on polyethylene or polypropylene plastic or similar materials