Headlight Assembly Adhesive, Black, Case of 24 Bulk Case of 24. ORACLE Part 1999-504 Ensure the perfect seal, every time with ORACLE Premium Headlight Sealant! The first commercially available sealant specifically formulated for automotive headlight sealing applications has now arrived. This premium headlight sealant is specifically formulated RTV (Room-Temperature-Vulcanizing) waterproof silicone sealant designed for use in reassembling automotive headlamp housings. The sealant has a tack time of 30 minutes and cures in three hours although six hours is recommended to insure a full cure. Specifications: Min. Application Temperature.......35 degrees F Max Application Temperature....115 degrees F Coverage (3/16 Bead).............50 ft.