Hydraulic Couplings

Hydraulic Couplings
  • Gates® - PolarSeal™ 5/8" Aluminum Female SAE Tube O-Ring Nut Swivel Coupling (ACA) with R134a Service Port 90° Bent Tube
    Gates® - PolarSeal™ 5/8" Aluminum Female SAE Tube O-Ring Nut Swivel Coupling (ACA) with R134a Service Port 90° Bent Tube (G45589-1210)
    1
    # mpn1894197619
    PolarSeal™ 5/8" Aluminum Female SAE Tube O-Ring Nut Swivel Coupling (ACA) with R134a Service Port 90° Bent Tube (G45589-1210) by Gates®. This product is made of high-quality materials to serve you for years to come. Designed using...
    High quality at an affordable priceExpertly made from premium materials
    $31.02
    In Stock - Ships within 24 hrs
  • Gates® - PolarSeal™ 5/8" Aluminum Hose Length Extender Coupling (ACA)
    Gates® - PolarSeal™ 5/8" Aluminum Hose Length Extender Coupling (ACA) (G45535-1212)
    1
    # mpn1894197641
    PolarSeal™ 5/8" Aluminum Hose Length Extender Coupling (ACA) (G45535-1212) by Gates®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in...
    High quality at an affordable priceExpertly made from premium materials
    $7.95
    In Stock - Ships within 24 hrs
  • Gates® - PolarSeal™ 5/8" Aluminum Male Inverted O-Ring Coupling (ACA)
    Gates® - PolarSeal™ 5/8" Aluminum Male Inverted O-Ring Coupling (ACA) (G45597-1212)
    1
    # mpn1894215242
    PolarSeal™ 5/8" Aluminum Male Inverted O-Ring Coupling (ACA) (G45597-1212) by Gates®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in...
    High quality at an affordable priceExpertly made from premium materials
    $11.57
    In Stock - Ships within 24 hrs
  • Gates® - PolarSeal™ 5/8" Aluminum Male SAE Flareless Assembly Coupling (ACA)
    Gates® - PolarSeal™ 5/8" Aluminum Male SAE Flareless Assembly Coupling (ACA) (G45510-1212)
    1
    # mpn1894215294
    PolarSeal™ 5/8" Aluminum Male SAE Flareless Assembly Coupling (ACA) (G45510-1212) by Gates®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers...
    High quality at an affordable priceExpertly made from premium materials
    $20.27
    In Stock - Ships within 24 hrs
  • Gates® - PolarSeal™ 5/8" Aluminum Male SAE Flareless Assembly Coupling (ACA)
    Gates® - PolarSeal™ 5/8" Aluminum Male SAE Flareless Assembly Coupling (ACA) (G45510-1210)
    1
    # mpn1894207713
    PolarSeal™ 5/8" Aluminum Male SAE Flareless Assembly Coupling (ACA) (G45510-1210) by Gates®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers...
    High quality at an affordable priceExpertly made from premium materials
    $19.67
    In Stock - Ships within 24 hrs
  • Gates® - PolarSeal™ 5/8" Aluminum Male SAE Tube O-Ring Nut 90° Bent Tube Coupling (ACA)
    Gates® - PolarSeal™ 5/8" Aluminum Male SAE Tube O-Ring Nut 90° Bent Tube Coupling (ACA) (G45585-1212)
    1
    # mpn1894222146
    PolarSeal™ 5/8" Aluminum Male SAE Tube O-Ring Nut 90° Bent Tube Coupling (ACA) (G45585-1212) by Gates®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and...
    High quality at an affordable priceExpertly made from premium materials
    $12.09
    In Stock - Ships within 24 hrs
  • Gates® - PolarSeal™ 5/8" Aluminum Male SAE Tube O-Ring Nut 90° Bent Tube Coupling (ACA)
    Gates® - PolarSeal™ 5/8" Aluminum Male SAE Tube O-Ring Nut 90° Bent Tube Coupling (ACA) (G45585-1210)
    1
    # mpn1894207689
    PolarSeal™ 5/8" Aluminum Male SAE Tube O-Ring Nut 90° Bent Tube Coupling (ACA) (G45585-1210) by Gates®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and...
    High quality at an affordable priceExpertly made from premium materials
    $12.31
    In Stock - Ships within 24 hrs
  • Gates® - PolarSeal™ 5/8" Aluminum Male SAE Tube O-Ring Nut Swivel Coupling (ACA)
    Gates® - PolarSeal™ 5/8" Aluminum Male SAE Tube O-Ring Nut Swivel Coupling (ACA) (G45583-1210)
    1
    # mpn1894197632
    PolarSeal™ 5/8" Aluminum Male SAE Tube O-Ring Nut Swivel Coupling (ACA) (G45583-1210) by Gates®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with...
    High quality at an affordable priceExpertly made from premium materials
    $7.92
    In Stock - Ships within 24 hrs
  • Gates® - PolarSeal™ 5/8" Steel Compressor Female SAE Tube O-Ring Nut Swivel Coupling (ACA) 90° Bent Tube
    Gates® - PolarSeal™ 5/8" Steel Compressor Female SAE Tube O-Ring Nut Swivel Coupling (ACA) 90° Bent Tube (G45958-1210S)
    1
    # mpn1894207627
    PolarSeal™ 5/8" Steel Compressor Female SAE Tube O-Ring Nut Swivel Coupling (ACA) 90° Bent Tube (G45958-1210S) by Gates®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art...
    High quality at an affordable priceExpertly made from premium materials
    $18.59
    In Stock - Ships within 24 hrs
  • Gates® - PolarSeal™ 5/8" Steel Compressor Female Tube O-Ring Nut Coupling (ACA) with 134a Service Port 90° Block
    Gates® - PolarSeal™ 5/8" Steel Compressor Female Tube O-Ring Nut Coupling (ACA) with 134a Service Port 90° Block (G45960-1210S)
    1
    # mpn1894198550
    PolarSeal™ 5/8" Steel Compressor Female Tube O-Ring Nut Coupling (ACA) with 134a Service Port 90° Block (G45960-1210S) by Gates®. This product is made of high-quality materials to serve you for years to come. Designed using...
    High quality at an affordable priceExpertly made from premium materials
    $35.73
    In Stock - Ships within 24 hrs
  • Gates® - PolarSeal™ 5/8" Steel Female SAE Tube O-Ring Nut Swivel Coupling (ACA) with R134a Service Port 90° Bent Tube
    Gates® - PolarSeal™ 5/8" Steel Female SAE Tube O-Ring Nut Swivel Coupling (ACA) with R134a Service Port 90° Bent Tube (G45589-1210S)
    1
    # mpn1894207682
    PolarSeal™ 5/8" Steel Female SAE Tube O-Ring Nut Swivel Coupling (ACA) with R134a Service Port 90° Bent Tube (G45589-1210S) by Gates®. This product is made of high-quality materials to serve you for years to come. Designed using...
    High quality at an affordable priceExpertly made from premium materials
    $30.47
    In Stock - Ships within 24 hrs
  • Gates® - PolarSeal™ Steel R12 Ferrules Coupling (8PCACF)
    Gates® - PolarSeal™ Steel R12 Ferrules Coupling (8PCACF) (83931)
    1
    # mpn1894209354
    PolarSeal™ Steel R12 Ferrules Coupling (8PCACF) by Gates®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs...
    High quality at an affordable priceExpertly made from premium materials
    $2.35
    In Stock - Ships within 24 hrs
  • Gates® - Power Crimp™ 1/2" Female Braze-On Stems Coupling
    Gates® - Power Crimp™ 1/2" Female Braze-On Stems Coupling (80404)
    1
    # mpn1894199331
    Power Crimp™ 1/2" Female Braze-On Stems Coupling (80404) by Gates®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet...
    High quality at an affordable priceExpertly made from premium materials
    $5.12
    In Stock - Ships within 24 hrs
  • Gates® - Power Crimp™ PC1FS™ 0.97" x 1.20" Steel One Non-Skive Ferrules Coupling
    Gates® - Power Crimp™ PC1FS™ 0.97" x 1.20" Steel One Non-Skive Ferrules Coupling (80483)
    1
    # mpn1894199312
    Power Crimp™ PC1FS™ 0.97" x 1.20" Steel One Non-Skive Ferrules Coupling (80483) by Gates®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers...
    High quality at an affordable priceExpertly made from premium materials
    $5.50
    In Stock - Ships within 24 hrs
  • Gates® - Service Gladhand Coupling for Rubber Hose
    Gates® - Service Gladhand Coupling for Rubber Hose (G33031-0508)
    1
    # mpn1894208773
    Service Gladhand Coupling for Rubber Hose (G33031-0508) by Gates®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your...
    High quality at an affordable priceExpertly made from premium materials
    $13.51
    In Stock - Ships within 24 hrs
  • Gates® - SureLok™ 1/2" x 1.28" Air Brake to Male Pipe 90° Coupling
    Gates® - SureLok™ 1/2" x 1.28" Air Brake to Male Pipe 90° Coupling (G31104-0808)
    1
    # mpn1894215463
    SureLok™ 1/2" x 1.28" Air Brake to Male Pipe 90° Coupling (G31104-0808) by Gates®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind....
    High quality at an affordable priceExpertly made from premium materials
    $13.93
    In Stock - Ships within 24 hrs
  • Gates® - SureLok™ 1/2" x 1.64" Air Brake to Male Pipe Coupling
    Gates® - SureLok™ 1/2" x 1.64" Air Brake to Male Pipe Coupling (G31100-0806)
    1
    # mpn1894207896
    SureLok™ 1/2" x 1.64" Air Brake to Male Pipe Coupling (G31100-0806) by Gates®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It...
    High quality at an affordable priceExpertly made from premium materials
    $11.53
    In Stock - Ships within 24 hrs
  • Gates® - SureLok™ 1/2" x 1.68" Air Brake to Male Pipe Coupling
    Gates® - SureLok™ 1/2" x 1.68" Air Brake to Male Pipe Coupling (G31100-0804)
    1
    # mpn1894197828
    SureLok™ 1/2" x 1.68" Air Brake to Male Pipe Coupling (G31100-0804) by Gates®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It...
    High quality at an affordable priceExpertly made from premium materials
    $10.89
    In Stock - Ships within 24 hrs
  • Gates® - SureLok™ 1/2" x 2.01" Air Brake Union Coupling
    Gates® - SureLok™ 1/2" x 2.01" Air Brake Union Coupling (G31400-0808)
    1
    # mpn1894216406
    SureLok™ 1/2" x 2.01" Air Brake Union Coupling (G31400-0808) by Gates®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet...
    High quality at an affordable priceExpertly made from premium materials
    $10.47
    In Stock - Ships within 24 hrs
  • Gates® - SureLok™ 1/2" x 2.38" Air Brake to Male Pipe 45° Coupling
    Gates® - SureLok™ 1/2" x 2.38" Air Brake to Male Pipe 45° Coupling (G31102-0806)
    1
    # mpn1894207891
    SureLok™ 1/2" x 2.38" Air Brake to Male Pipe 45° Coupling (G31102-0806) by Gates®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind....
    High quality at an affordable priceExpertly made from premium materials
    $14.24
    In Stock - Ships within 24 hrs
  • Gates® - SureLok™ 1/2" x 2.44" Air Brake Union Tee Coupling
    Gates® - SureLok™ 1/2" x 2.44" Air Brake Union Tee Coupling (G31451-0806)
    1
    # mpn1894216400
    SureLok™ 1/2" x 2.44" Air Brake Union Tee Coupling (G31451-0806) by Gates®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will...
    High quality at an affordable priceExpertly made from premium materials
    $26.75
    In Stock - Ships within 24 hrs
  • Gates® - SureLok™ 1/2" x 2.53" Air Brake Union Tee Coupling
    Gates® - SureLok™ 1/2" x 2.53" Air Brake Union Tee Coupling (G31450-0808)
    1
    # mpn1894216402
    SureLok™ 1/2" x 2.53" Air Brake Union Tee Coupling (G31450-0808) by Gates®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will...
    High quality at an affordable priceExpertly made from premium materials
    $17.49
    In Stock - Ships within 24 hrs
  • Gates® - SureLok™ 1/2" x 2.60" Air Brake to Male Pipe 45° Coupling
    Gates® - SureLok™ 1/2" x 2.60" Air Brake to Male Pipe 45° Coupling (G31102-0808)
    1
    # mpn1894215468
    SureLok™ 1/2" x 2.60" Air Brake to Male Pipe 45° Coupling (G31102-0808) by Gates®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind....
    High quality at an affordable priceExpertly made from premium materials
    $16.05
    In Stock - Ships within 24 hrs
  • Gates® - SureLok™ 1/4" x 0.83" Air Brake Union 90° Coupling
    Gates® - SureLok™ 1/4" x 0.83" Air Brake Union 90° Coupling (G31404-0404)
    1
    # mpn1894198757
    SureLok™ 1/4" x 0.83" Air Brake Union 90° Coupling (G31404-0404) by Gates®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will...
    High quality at an affordable priceExpertly made from premium materials
    $11.20
    In Stock - Ships within 24 hrs
  • Gates® - SureLok™ 1/4" x 0.83" Air Brake to Male Pipe Swivel 90° Coupling
    Gates® - SureLok™ 1/4" x 0.83" Air Brake to Male Pipe Swivel 90° Coupling (G31124-0402)
    1
    # mpn1894222184
    SureLok™ 1/4" x 0.83" Air Brake to Male Pipe Swivel 90° Coupling (G31124-0402) by Gates®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in...
    High quality at an affordable priceExpertly made from premium materials
    $9.35
    In Stock - Ships within 24 hrs
  • Gates® - SureLok™ 1/4" x 0.87" Air Brake to Male Pipe 90° Coupling
    Gates® - SureLok™ 1/4" x 0.87" Air Brake to Male Pipe 90° Coupling (G31104-0404)
    1
    # mpn1894215466
    SureLok™ 1/4" x 0.87" Air Brake to Male Pipe 90° Coupling (G31104-0404) by Gates®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind....
    High quality at an affordable priceExpertly made from premium materials
    $7.74
    In Stock - Ships within 24 hrs
  • Gates® - SureLok™ 1/4" x 0.94" Air Brake to Male Pipe 90° Coupling
    Gates® - SureLok™ 1/4" x 0.94" Air Brake to Male Pipe 90° Coupling (G31104-0406)
    1
    # mpn1894197820
    SureLok™ 1/4" x 0.94" Air Brake to Male Pipe 90° Coupling (G31104-0406) by Gates®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind....
    High quality at an affordable priceExpertly made from premium materials
    $9.97
    In Stock - Ships within 24 hrs
  • Gates® - SureLok™ 1/4" x 1.17" Air Brake to Male Pipe Coupling
    Gates® - SureLok™ 1/4" x 1.17" Air Brake to Male Pipe Coupling (G31100-0404)
    1
    # mpn1894197830
    SureLok™ 1/4" x 1.17" Air Brake to Male Pipe Coupling (G31100-0404) by Gates®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It...
    High quality at an affordable priceExpertly made from premium materials
    $5.09
    In Stock - Ships within 24 hrs
  • Gates® - SureLok™ 1/4" x 1.20" Air Brake to Male Pipe Coupling
    Gates® - SureLok™ 1/4" x 1.20" Air Brake to Male Pipe Coupling (G31100-0406)
    1
    # mpn1894207898
    SureLok™ 1/4" x 1.20" Air Brake to Male Pipe Coupling (G31100-0406) by Gates®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It...
    High quality at an affordable priceExpertly made from premium materials
    $7.20
    In Stock - Ships within 24 hrs
  • Gates® - SureLok™ 1/4" x 1.40" Air Brake Union Coupling
    Gates® - SureLok™ 1/4" x 1.40" Air Brake Union Coupling (G31400-0404)
    1
    # mpn1894198759
    SureLok™ 1/4" x 1.40" Air Brake Union Coupling (G31400-0404) by Gates®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet...
    High quality at an affordable priceExpertly made from premium materials
    $7.98
    In Stock - Ships within 24 hrs




Couplings are the essential parts of any hydraulic system. They are used to connect hoses and pipes to the other elements of the system including reservoirs, cylinders, valves, and pumps. Designed according to strict requirements, couplings are available in many types and materials compatible with the fluid circulating in the system. It is vital, hence, to pick the most appropriate class of fittings to get smooth running, top performance, and safety. Common materials include brass, stainless steel, aluminum, plastic, and copper. For example, plastic couplings offer good resistance to corrosion, but they are unreliable in high-pressure systems.

The choice of hydraulic couplings depends on the pressure rating, chemical compatibility with the fluid, operating temperature, and sealing capacity. Crimp fittings, coupling barbs, compression fittings, and quick disconnect couplers are the most common types used in hydraulic systems. Typically, they are available in many sizes and shapes to fit various designs. In our online catalog, you can find a wide assortment of these and other couplings including inverted flares, mini-barbed tubes, and reusable models. We also offer a broad selection of adapters to ensure flexibility and efficiency. The costs are reasonable, and the quality is ensured by leading companies in the industry.

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