Parker Triple-Lok 37 Flare JIC Tube Fittings and Adapters are a reliable leak-free metal to metal connection solution for most high pressure hydraulic applications.Parker's 37 Flare JIC tube fittings and adapters, Triple-Lok, meet the requirements of both SAE J514 and ISO 8434-2 and offer the industry's broadest offering of port ends. The design has a small metal to metal seal area which results in a compact design, low assembly torque, high temperature and high pressure capability.