Made in USA - Compression Tube Connector: 9/16-18″ Thread, Compression x Straight Thread O-Ring - 76040526 - MSC Industrial Supply
Beduan 304 Stainless Steel Air Compression Tube Fitting, 6mm Tube OD x 6mm Tube OD, Equal Straight Connect for Tubing Pipe Line (Pack of 2): Amazon.com: Industrial & Scientific
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Hydraulic OD 1 / 4 Stainless Steel Union Connector Compression Double Ferrule Tube Fittings Factory China - Customized Products' Price - Naco Fluid Equipment
A Handy Guide to Stainless Tube Compression Fittings | Titan Fittings
Stainless Steel Compression Fittings, 316 SS Compression Tube Fittings