Single part adhesive is for temporary repairs. The patch must be replaced and Two Part adhesive used for a permenant repair. Will bond natural rubber, polychloroprene, butyl, nitrile , hypalon and polyurethane rubber materials- rigid PVC, wood, leather and metal (metal should be primed with 2799 primer). Excellent resistance to heat, salt water and humidity.Easy to mix two part system supplied in sets with requisite amount of curing agent; can be used as a single part for quick temporary repairs.Easy to apply by brush or roller. NOT FOR USE ON PVC.