{"product_id":"parker-4-hlo-s-tube-union-o-ring-face-seal-1-4-in-9200-psi","title":"Parker 4 Hlo-s Tube Union O-ring Face Seal 1\/4 in 9200 Psi","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe PARKER 4 HLO-S is a compression tube union with an O-Ring Face Seal (ORFS) end connection, designed for high-pressure hydraulic and fluid power lines. Constructed from steel, this union joins two tube ends of equal outside diameter in a straight-run configuration. The ORFS design provides a leak-free metal-to-metal seat combined with an O-ring seal, making it well suited for systems where vibration, pressure spikes, or fluid compatibility are concerns. It accepts 1\/4-inch outside diameter tubing and is rated to a maximum working pressure of 9200 psi. The UNF thread standard ensures compatibility with standard SAE ORFS fittings used across hydraulic systems.\u003c\/p\u003e\u003cp\u003eThis union is used in mobile hydraulic equipment, industrial fluid power systems, and high-pressure plumbing circuits where a reliable inline tube connection is required. Typical applications include construction equipment hydraulics, agricultural machinery, and industrial presses where tube routing requires a straight union junction. It is installed by hydraulic technicians and fluid power specialists working on both OEM builds and field service repairs.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eO-Ring Face Seal (ORFS) end connections for leak-free performance under high pressure\u003c\/li\u003e\n\u003cli\u003eMaximum working pressure of 9200 psi for demanding hydraulic applications\u003c\/li\u003e\n\u003cli\u003eSteel construction provides durability in industrial and mobile equipment environments\u003c\/li\u003e\n\u003cli\u003eUNF thread standard ensures broad compatibility with SAE ORFS hardware\u003c\/li\u003e\n\u003cli\u003eAccepts 1\/4-inch outside diameter tubing\u003c\/li\u003e\n\u003cli\u003eOverall length of 1.08 inches for compact inline installation\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement or new-installation fitting for hydraulic and fluid power systems using 1\/4-inch OD tubing with SAE O-Ring Face Seal connections and UNF thread standard.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation should be performed by a qualified hydraulic technician. Depressurize and bleed the hydraulic system completely before disconnecting any lines or fittings. Inspect the O-ring seating surface for nicks or contamination before assembly, and ensure the O-ring is properly seated and lubricated with a compatible fluid prior to torquing. Follow the equipment manufacturer's torque specifications and applicable fluid power system standards during final assembly.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitting Type\u003c\/strong\u003e: Compression Tube Union\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\u003eMaterial\u003c\/strong\u003e: Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTube Outside Diameter\u003c\/strong\u003e: 1\/4 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Working Pressure\u003c\/strong\u003e: 9200 psi\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 1.08 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.06 pounds\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\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: 4 HLO-S\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"PARKER","offers":[{"title":"Default Title","offer_id":51541648474418,"sku":"4 HLO-S","price":19.41,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/05cb53dc074fe00bb9d0c027ae9b4acb.jpg?v=1785881092","url":"https:\/\/voomisupply.com\/products\/parker-4-hlo-s-tube-union-o-ring-face-seal-1-4-in-9200-psi","provider":"Voomi Supply","version":"1.0","type":"link"}