7000 & 9000 Series Gas Vapor Cartridge, Organic Vapors, Black no checkout the product wicks between engaged the product wicks between engaged threads and eliminates the need for disassembly prior to application Product cures when confined in the absence of air between close fitting metal surfaces Prevents loosening and leakage due to shock and vibration Can also fill porosities in welds High quality Grade R single line welding hoses Grade R welding hoses are designed for carrying acetylene or oxygen to welding equipment Green hose carries oxygen to welding equipment Red hose carries acetylene Hose cover resists oils Compliments both 7000 half mask and 9000 full face respirators Easy mount bayonet attachment