J-B Weld KwikWeld Syringe Epoxy sets in just 6 minutes to form a powerful epoxy with an exceptional 2,424-PSI strength rating. This cold-weld system mixes to form a permanent bond you can shape, tap, file, sand, and even drill after curing. As the faster form of original J-B Weld epoxy, J-B Weld KwikWeld Syringe Epoxy cures in just 4- to 6 hours to a dark grey and can withstand temperatures up to 300F. This quick-setting epoxy syringe works great on your home repairs, auto work, plumbing, marine applications, crafts, brick, ceramic, concrete, and more. Youll never run out of uses for epoxy this reliable. Cancer and Reproductive Harm- www.P65Warnings.ca.gov. Type: Boat Maintenance.