Versachem 27039-12PK Black Silicone - 3 oz., (Pack of 12) Forms a tough, flexible silicone rubber gasket that provides a leak proof seal Resists aging and weathering, maintaining long-term durability and flexibility Set time: 8-10 minutes; Cure time: 12-24 hours Ideal for bonding, sealing, insulating, repairing, filling voids Non-flammable, waterproof, low volatile formula