{"product_id":"parker-6-4-hlo-s-compression-tube-union-orfs-steel","title":"Parker 6-4 Hlo-s Compression Tube Union Orfs Steel","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe PARKER 6-4 HLO-S is a compression tube union with O-Ring Face Seal (ORFS) end connections, manufactured from steel for use in high-pressure hydraulic and fluid power systems. It connects two tube lines of differing outside diameters — 3\/8 inch and 1\/4 inch — using a compression fitting design with UNF thread standard. Rated to a maximum working pressure of 9200 psi, this union is built for demanding service environments where leak-free performance is critical. Hydraulic technicians and fluid power specialists specify this fitting when reducing or joining tube runs in tight plumbing assemblies.\u003c\/p\u003e\n\u003cp\u003eThis union is used in hydraulic systems, mobile equipment, and industrial fluid power applications where ORFS connections are specified for reliable, vibration-resistant sealing. The dual-diameter tube connection makes it suitable for installations requiring a transition between 3\/8 inch and 1\/4 inch tubing within the same line. Typical install scenarios include machine tool plumbing, off-highway equipment, and industrial hydraulic circuits where tube unions must hold pressure without weeping.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eORFS end connections provide a leak-free metal-to-metal seat with O-ring backup for high-pressure reliability\u003c\/li\u003e\n  \u003cli\u003eMaximum working pressure rated at 9200 psi for demanding hydraulic service\u003c\/li\u003e\n  \u003cli\u003eConnects 3\/8 inch and 1\/4 inch outside diameter tubing in a single union body\u003c\/li\u003e\n  \u003cli\u003eUNF thread standard ensures compatibility with standard hydraulic fittings and adapters\u003c\/li\u003e\n  \u003cli\u003eSteel construction offers strength and durability in high-pressure fluid power circuits\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement or service fitting for hydraulic and fluid power tube assemblies using O-Ring Face Seal connections with UNF threading. Verify tube outside diameter and working pressure requirements before installation.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation should be performed by a qualified hydraulic technician or fluid power specialist. Depressurize and drain the hydraulic circuit completely before disassembly or fitting replacement. Inspect the O-ring seating surface for nicks or contamination prior to assembly, and ensure the O-ring is properly seated to achieve a reliable seal. Consult applicable industry standards and equipment service documentation for proper assembly procedures.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFitting Type\u003c\/strong\u003e: Union\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEnd Connections\u003c\/strong\u003e: O-Ring Face Seal (ORFS)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: UNF\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTube Outside Diameter\u003c\/strong\u003e: 3\/8 x 1\/4 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum Working Pressure\u003c\/strong\u003e: 9200 psi\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.06 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 27121700\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eStandard Information\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: PARKER\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 6-4 HLO-S\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"PARKER","offers":[{"title":"Default Title","offer_id":51539073466674,"sku":"6-4 HLO-S","price":106.01,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/39216ec0b3cafc2e4495da90860ec219.jpg?v=1785834412","url":"https:\/\/voomisupply.com\/products\/parker-6-4-hlo-s-compression-tube-union-orfs-steel","provider":"Voomi Supply","version":"1.0","type":"link"}