3/16" High Pressure Compression Union (1) S.U.R&R.'s HP14 3/16 inch High Pressure Compression Unions are unions designed for high pressure, high vibration, heavy-duty applications. .Available to as a restock component for the HP200 or individual sale..Safe for use in applications involving pressures up to 5,000 lbs..Connect, aluminum, copper, steel, stainless steel and heavy walled tubing without flaring.Made with hexavalent chromium-free zinc plating.Meets SAE J512, SAE J514 and SAE J533 specifications.Not recommended for use on hydraulic brake systems HP316