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Demon Tweeks£4.26Visit shop Automotive Plumbing Solutions Male To Male Adaptor JIC - NPT / NPTF - 6 JIC To 1/8 Inch NPTF, Silver, Plated Steel, Silver
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This guide is for automotive enthusiasts and DIY mechanics working on fluid systems. The key benefit is providing a reliable steel adapter for connecting different thread types in oil, water, or brake lines. A caveat is ensuring thread compatibility before installation, as NPT and JIC threads are not interchangeable without proper adaptors. This product is a male-to-male fitting featuring a tapered NPTF thread on one end and an AN (JIC) thread on the other, designed for corrosion resistance and durability in automotive fluid applications.
| Model Part Number | 722 |
|---|---|
| Brand | Automotive Plumbing Solutions |
NPTF (National Pipe Taper Fuel) is a tapered thread designed to create a seal through thread deformation and friction, often used with sealant. JIC (Joint Industry Council) fittings use a 37-degree flare angle that creates a metal-to-metal seal between the flare face and the mating surface, typically without sealant.
Yes, the fitting is specified as suitable for brake lines, provided both the NPTF and JIC connections are rated for the system's pressure and installed correctly.
The fitting is made of steel with a silver-colored plated finish for corrosion resistance.
While NPTF is a dry-seal thread, using a small amount of thread sealant suitable for the fluid type is often recommended to ensure a positive seal and ease of future disassembly.
JIC fittings should be tightened until the flare is firmly seated. Overtightening can damage the flare. Typically, a snug fit followed by an additional 1/8 to 1/4 turn with a wrench is sufficient, but consult specific JIC installation guides if unsure.
This specific model is steel. Automotive Plumbing Solutions also offers aluminum versions with blue or black anodized finishes for different applications.
Verify you have the correct thread size and type (1/8 NPTF and 9/16 JIC). Check for cross-threading or debris in the ports. Back out and try again.
For NPTF side, the fitting may not be tight enough or requires thread sealant. For JIC side, ensure the flare is clean and properly seated against the mating surface, and the fitting is adequately tightened. Inspect both mating surfaces for damage.
This is unlikely with the plated steel finish but could occur in extremely harsh environments. Clean any surface rust and consider using a more aggressive sealant or switching to a stainless steel fitting if the environment is severe.
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