Parker A-Lok 2BLP2-316 316 Stainless Steel Compression Tube Fitting, Cap, 1/8" Tube OD Cap for closing the end of a tube or fitting Connects to tubing Chemically hardened type 316 stainless steel for higher strength and greater corrosion resistance than untreated stainless steel Twin ferrule compression fitting for a leak-resistant seal in high-pressure applications For use with stainless steel tubing