FJIC Adapters

A FJIC X MNPT connector allows the user to convert either a Female JIC connection to a Male NPT connection or convert Male NPT threads to Female JIC connection.

A FJIC X MJIC connector allows the user to convert either a Female JIC connection to a Male JIC connection or convert Male JIC threads to Female JIC connection.

These stainless steel parts are made with precision 304 Grade Stainless Steel and are clean and free from burrs or debris. These fittings are 37° JIC threads and NPT threads (National Pipe Taper) and will compress against other Female/Male NPT threads creating a tighter and tighter connection. All NPT threads require thread sealant to create a watertight and gas-tight seal between the threads. We recommend using Yellow Gas PTFE Tape because it is rated for gasses and is UL listed and it is NOT recommended to use white PTFE tape because it is not rated for gas service.

The 37° JIC connection will create a seal by compressing the flared end against an opposite female/male flared connection. JIC connections do not require thread sealant because they seal off the flared surface of the fitting JIC Fittings are also not the same size as NPT fittings but do have the same size nomenclature. When connecting JIC fittings to one another it is recommended to use 2 wrenches - 1 to tighten the fitting and 1 to hold back against the force applied to create resistance and ensure a better seal.

Joint Industry Council (JIC) Fittings

JIC fittings are widely used in fluid applications such as the delivery of fuel or hydraulics, especially when a higher PSI is involved. The JIC fitting uses its 37-degree chamfer seating surface to seal rather than an o-ring that could corrode. This allows them to be connected and disconnected repeatedly, such as hydraulic applications, without concern for deformation.

Advantages of JIC fittings

JIC fittings are very similar to Army-Navy fittings but with a lower tolerance and therefore are produced at a lower cost. Commonly made out of stainless steel, the braided hoses make connecting and disconnecting quick and easy, and the NPT to JIC adapters allow most connections to be easily converted to a JIC system. Maintenance, particularly with stainless steel fittings is very low, and costs are usually isolated to replacing a damaged component instead of the entire system.

National Pipe Taper (NPT)

NPT is a standardized fitting that is commonly used for joining pipes. Due to the tapered threads (wider diameter at the base of the threads, similar to a trapezoid) the male fitting will tighten the further it is threaded into the female. NPT follows the technical standards provided by the American National Standard Pipe Thread standards, often called national pipe thread, which is often where the confusions with NPT arises, as NPT is specifically an acronym that refers to tapered pipe.