Back Home / Pipe & Tube Fittings / Composite / COMPOSITE STRAIGHT UNION, 3/8″ TUBE, AIR BRAKE COMPOSITE STRAIGHT UNION, 3/8″ TUBE, AIR BRAKE SKU: 62PMCX6 Categories: Composite, Pipe & Tube Fittings These are the quick disconnect version of nylon air brake (DOT) brass fittings. They are DOT approved and will be marked as such. Used with SAE J844 nylon tubing, no special tools required. There are no nuts or sleeves used in their application. Size 3/8″ tubing o.d. Case Quantity: 5 Log In For Pricing