Description:Caulk 4000UV Black 10 oz tube by 3M
A one part sealant that cures to form a firm, rubbery waterproof seal. Its flexibility allows for the dissipation of stress caused by shock, vibration, swelling or shrinking. Use above or below the waterline. Superior UV resistance properties. Tack free in less than 2 hours, cures in 24 hours.