RTV Silicone Sealant – Black. For Gaskets, Gearboxes, Pumps, Motors, Sealing, bonding, protection & waterproofing in HVAC, electrical, construction, metal working, for filling gaps between mating parts, gearboxes, pumps, motors & for general gasket sealing. • Award winning package - Select-A-Bead nozzle - That allows the user to control bead width for consistent results. • No caulk gun required. • High pressure and oil resistant • Adheres to metal, glass and painted surfaces Thanks @Stephen Cox !