Tube Fittings & Adapters

Parker Tube Fittings provide leak-free hydraulic connections, superior corrosion-free tube fittings, hose adapters and tube fabrication equipment for reliable leak-free connection solutions for most high pressure and high temperature hydraulic applications.


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Tube Fittings & Adapters


  • O-Ring Face Seal fittings
  • 37° flare JIC tube fittings,
  • Flat face seal fittings
  • Conversion adapters for tube and hose connections
  • Hydraulic benders and Parflange® flaring and flanging system


Tube Fittings & Adapters CAT 4300

Parker's Seal-Lok O-Ring Face Seals offer leak-free seal fitting and rugged construction to make them optimal for use in situations with high-pressure, vibration and impulse environments.


  • Resistance to overtightening
  • Zero clearance assembly
  • Unlimited reusability
  • Superior vibration resistance
  • Ease/speed of assembly
  • Field replaceable components
  • SAE J1453 and ISO 8434-3 compliance

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.


  • Easily adaptable to inch tube, metric tube and hose giving it worldwide acceptance.
  • Vast selection of port end options
  • Manufactured with a longer locknut virtually eliminating washer damage and potential leaks, as well as making assembly virtually mistake-proof. 
  • Steel fittings substantially exceeded the SAE corrosion requirements of 72 hours without red rust, lasting up to 1,000 as found by an independent test facility.  
  • Stainless Steel nuts have a coating to prevent galling.
  • Available in steel, stainless steel, and brass in sizes 1/8” - 2 ½” with working pressures up to 7500 psi.

Parker offers many different conversion adapters to support whatever tube or hose end conversion needed.


  • Meet or exceed all pertinent industry requirements of SAE J1453, SAE J514, and ISO 8434-1.
  • Steel fittings substantially exceeded the SAE corrosion requirements of 72 hours without red rust, lasting up to 1,000 as found by an independent test facility.  
  • Eliminates potential hydraulic leaks caused by O-ring fall-out and O-ring pinch during assembly. 
  • Offered in steel, stainless steel and brass in sizes 1/8” through 2” with pressures up to 7700 psi.   

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