Boss couplings are all-purpose hose couplings, universally recommended for steam hose connections. They are also widely used for air, water, fluid petroleum, chemicals and liquid petroleum gas up to 1″ ID. Boss couplings can be applied to many types of rubber, synthetic, plastic, metallic or semi-metallic hose Boss Ground Joint Complete couplings supply a convenient threaded fitting to connect two lengths of hose, or a single length to a male or female threaded outlet Use with Boss Clamps Recommended for steam service up to 450°F Leak-proof seal forms when the metal head of the stem makes contact with the patented polymer seat in the Boss Ground Joint spud
