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37° JIC Tube Sleeve - Part 319

Part Number: 319

37° JIC Tube Sleeve

Product Overview

The Delphi Fittings Part 319 is a 37° JIC Tube Sleeve, a critical component used in conjunction with a 37° JIC Tube Nut (Part #318) to create reliable JIC flare connections with hydraulic tubing. The sleeve is placed on the tube behind the 37° flare before the nut. When the JIC tube nut is tightened onto a male JIC fitting, the sleeve provides crucial backup support to the flared tube, preventing it from collapsing or distorting under compression and ensuring even pressure distribution on the flare. This action helps to create a strong, consistent metal-to-metal seal between the flared tube and the 37° cone of the male JIC fitting. Manufactured from high-quality carbon steel and zinc-plated for corrosion resistance, the Part 319 JIC Tube Sleeve is essential for the integrity of JIC flared tube assemblies in hydraulic systems.

Key Features & Specifications

Material High-Grade Carbon Steel
Component Type Tube Sleeve (Ferrule) for 37° JIC Flare Connections
Standard Conforms to SAE J514 / ISO 8434-2 dimensional standards for JIC sleeves.
Compatibility Used with 37° flared tubing and a JIC Tube Nut (Part #318 or similar) to connect to male JIC fittings.
Function Supports the flared tube during assembly, ensuring proper seal formation and preventing flare damage.
Corrosion Protection Standard Zinc Plating for enhanced durability.

Commonly Available Sizes (Part #319 Series)

Delphi Fittings offers the 37° JIC Tube Sleeve in a comprehensive range of sizes corresponding to common hydraulic tube outside diameters (OD) and JIC fitting sizes.

Examples include (for Tube OD / JIC Size):

  • 319-02: For 1/8" Tube OD (connects with -02 JIC Nut)
  • 319-03: For 3/16" Tube OD (connects with -03 JIC Nut)
  • 319-04: For 1/4" Tube OD (connects with -04 JIC Nut)
  • 319-05: For 5/16" Tube OD (connects with -05 JIC Nut)
  • 319-06: For 3/8" Tube OD (connects with -06 JIC Nut)
  • 319-08: For 1/2" Tube OD (connects with -08 JIC Nut)
  • 319-10: For 5/8" Tube OD (connects with -10 JIC Nut)
  • 319-12: For 3/4" Tube OD (connects with -12 JIC Nut)
  • 319-14: For 7/8" Tube OD (connects with -14 JIC Nut)
  • 319-16: For 1" Tube OD (connects with -16 JIC Nut)
  • 319-20: For 1-1/4" Tube OD (connects with -20 JIC Nut)
  • 319-24: For 1-1/2" Tube OD (connects with -24 JIC Nut)
  • 319-32: For 2" Tube OD (connects with -32 JIC Nut)

Note: Always ensure the sleeve size matches the tube OD and the corresponding JIC Tube Nut (Part #318). For unlisted sizes, please contact our sales team.

Applications

The Part 319 JIC Tube Sleeve is a fundamental component in creating JIC flared tube connections across numerous industries:

  • Hydraulic systems in mobile equipment (construction, agriculture, mining).
  • Industrial machinery and manufacturing automation.
  • High-pressure fluid transfer lines.
  • Automotive and transportation systems.
  • Any application where rigid hydraulic tubing is connected using JIC 37° flare fittings.

Installation & Usage Guidelines

  • Ensure the hydraulic tube is cut squarely and properly deburred.
  • Flare the tube end to a precise 37° angle using a quality flaring tool. The flare surface must be smooth and free of cracks or imperfections.
  • Slide the JIC Tube Nut (Part #318) onto the tube first, followed by the JIC Tube Sleeve (Part #319). The sleeve should be oriented so its tapered end sits against the back of the flare.
  • Align the flared tube end (with nut and sleeve in place) with the male JIC fitting's 37° cone.
  • Thread the Tube Nut onto the male JIC fitting by hand until finger tight.
  • Use two wrenches: one to hold the male JIC fitting steady and one to tighten the Tube Nut to the recommended torque. The sleeve will ensure the flare is properly supported and compressed against the male cone.

Why Choose Delphi Fittings Part 319?

  • Essential for Seal Integrity: Provides crucial support to the flared tube, ensuring a reliable metal-to-metal seal.
  • Prevents Flare Damage: Helps prevent the flare from collapsing or cracking during tightening.
  • High-Pressure Performance: Contributes to the strength and reliability of JIC connections in demanding hydraulic systems.
  • Durable Material: Manufactured from high-grade carbon steel for strength and longevity.
  • Corrosion Resistant: Zinc-plated for protection against environmental factors.
  • Standard Compliance: Meets SAE J514 / ISO 8434-2 standards, ensuring proper fit and function with JIC nuts and fittings.
  • Quality Manufacturing: Produced under Delphi Fittings' ISO 9001:2015 certified quality management system.

Get a Quote for Part 319 - 37° JIC Tube Sleeve

For creating secure and reliable JIC flared tube connections, the Part 319 Tube Sleeve is an indispensable component, used with the Part #318 JIC Tube Nut. Contact Delphi Fittings for wholesale pricing, bulk order information, and expert assistance with your hydraulic component needs.

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