The Castair JIC10XJIC10 is a JIC-10 to JIC-10 adapter fitting used in compressed air distribution piping and equipment connections. This union-style adapter connects two -10 AN/JIC-10 fittings or hose ends in a straight configuration — useful when extending a run, connecting two JIC-10 hose assemblies end-to-end, or adapting from one JIC-10 component to another where a direct coupling is needed. JIC-10 uses a 7/8-14 UNF thread and mates with 5/8-inch OD tubing flared to a 37-degree seat.
About JIC Fittings in Compressed Air Systems
JIC (Joint Industry Council) fittings use a 37-degree flare seating surface. This seating angle creates a metal-to-metal seal that is leak-resistant under pressure and does not require sealant tape or thread compound on the flare seating surface (though thread sealant is still appropriate on the straight threads in certain configurations). JIC fittings are widely used in hydraulic systems and increasingly in compressed air distribution where secure, serviceable connections are needed at equipment connections, regulator ports, and manifold tees.
The dash number in JIC sizing corresponds to the tubing OD in 1/16-inch increments: JIC-10 fits 5/8-inch OD tubing (7/8-14 UNF thread), JIC-12 fits 3/4-inch OD tubing (1-1/16-12 UNF thread).
Fitting Details
- Part Number: JIC10XJIC10
- Connection 1: JIC-10 (7/8-14 UNF, 37-degree flare, 5/8-inch OD tubing)
- Connection 2: JIC-10 (7/8-14 UNF, 37-degree flare, 5/8-inch OD tubing)
- Type: Union adapter — male JIC-10 x male JIC-10 (confirm configuration before ordering)
- Seating: 37-degree flare metal-to-metal seal
- Category: Air Distribution Piping / JIC Fittings
Common Applications
- Connecting two JIC-10 hose or tube assemblies in a compressed air distribution line
- Extending air lines where two JIC-10 hose ends need to be joined
- Equipment connections at compressor discharge ports, regulators, or filter/regulator/lubricator (FRL) units plumbed with JIC-10 connections
- Repair connections in existing JIC-10 pneumatic lines
Installation Notes
- JIC fittings do not require PTFE tape on the flare seating surface — the 37-degree metal-to-metal flare creates the seal
- PTFE tape or thread sealant is appropriate on the straight thread body if threading into an NPT port adapter
- Do not overtighten — JIC fittings seal at the flare, not by crushing the threads. Finger-tight plus 1/4 to 1/2 turn with a wrench is typically sufficient
- Inspect flare seats for nicks or damage before assembly — a damaged flare will leak under pressure
Technical Specifications
- Part Number: JIC10XJIC10
- Connection Type: JIC-10 x JIC-10
- Thread Size: 7/8-14 UNF (both ends)
- Flare Angle: 37 degrees
- Tubing OD (nominal): 5/8 inch
- Application: Compressed air distribution piping, pneumatic connections
Why Buy From Air Compressor Factory Direct?
We stock Castair air distribution fittings and accessories. If you're planning or expanding your shop's compressed air piping system, we can help you spec the right fitting combinations for your line sizes and equipment. Free shipping on qualifying orders. Call 866-217-0063 for help selecting the right fittings for your installation.
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