Hydraulic tube connectors SAE-J514 (JIC 37°)

  • Hydraulic tube connectors


JIC fittings are offered in two material versions:

  • Zinc-plated carbon steel, standard seal: NBR rubber
  • stainless steel (AISI 316) standard seal: Viton.

Working temperature

Allowable working temp. depends on the material of a connector and seal:

  • carbon steel:
from -40°C up to +120°C
  • carbon steel + NBR:
from -35°C up to +100°C
  • stainless steel:
from -60°C up to +400°C
  • – stainless steel + Viton:
from -20°C up to +200°C

Working Pressure

A nominal pressure (maximum working pressure) stated by a manufacturer is calculated for static working conditions and a safety factor of 4:1 for a cutting ring connection and from 1.5 to 2.5 for connections screwed into a body or BANJO fittings. When choosing a connector, dynamic pressure load and vibrations must be also considered. For temperatures above +100°C, the maximum working pressure may require reduction (contact Tubes International).


Fittings according to JIC 37° can be used to transfer a wide range of fluids and gases. However, the compatibility of the medium with fitting material and seal type must be always checked. For all applications different from standard hydraulic oils, please contact TUBES INTERNATIONAL® Technical Department.

The pipes that are to be connected with JIC 37° fittings, must be flared with a flaring machine (hand tools must not be used). The connection of a fitting with a flared steel pipe with 74° angle cone (37° x 2 = 74°) is obtained by a ferrule in a tightening nut. The flared 37° part of the pipe couples with the conical 37° part of the fitting body assuring metal to metal seal. Fittings with elastomeric sealing (O-ring) are available as well. The fittings according to JIC 37° may also be connected with JIC type fittings (e.g. TI-ZJW110, TI-ZJZ110) of flexible hydraulic hose assemblies.

 łączniki JIC przed montażem
łączniki JIC po montażu
before assemblyafter assembly


Sales Network

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Type of material:

SAE-J514 (JIC 37°) tube connectors; in AISI 316 stainless steel

SAE-J514 (JIC 37°) tube connectors in AISI 316 stainless steel

jic ze stali węglowej

SAE-J514 (JIC 37°) tube connectors in carbon steel (zinc-plated or phosphated)

List of products:

carbon steel ferrules and nuts

Ferrules and nuts

carbon steel Straight connectors

Straight connectors

Angled connectors

Angled connectors

Screw-in straight connectors carbon steel

Screw-in straight connectors

Screw-in angled connectors carbon steel

Screw-in angled connectors

Screw-in T-connectors

Screw-in T-connectors

Screw-on connectors

Screw-on connectors

carbon steel Blank plugs and caps

Blank plugs and caps

Weld connectors

Weld connectors

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