KOOTNAS 2-Pack Solid Brass Bulkhead Fittings, 1/4 NPT Taper Female 3/4" Straight Male Thread Brass Water Tank Connector with 4 Rubber Rings and Silicone Rings, for Tank Body, Wooden Barrels, etc

Perfect. These bulkhead fitting were great for a vacuum chamber that I made. No leaks easy to install the quality is outstanding and function perfectly. The threads are smooth in operation great quality. 100% brass.

Good quality

Worked well for my needs and should last a long time.

These worked great for what I used them on. Installed them both on gas tanks. Used one to mount a 1 gallon gas can to my push mower so I don’t have to refill it halfway through mowing the lawn. And used the other one to replace the broken off plastic sender on a 12 gallon portable marine gas tank. Both are leak free and work great.

Nice machining. 1/8" NPT tap is done nicely, and from both sides, so fittings can easily be threaded in each side. If you're planning on really tightening these down to seal your bulkhead, I'd recommend adding some washers to keep the rubber/silicone washers from deforming.

I tried to buy stainless steel but it was way too expensive. These fittings are perfect for what I need themfor and didn't put me in the poor house. They also came with extra rubber and silicon gaskets. Don't wait,prices are going up if you can even get them in the near future.

Installed this into my Jeep so I could route a 3/8” air hose through the firewall. The fittings are great quality, although a little large for a wrench size in tight spaces. The washers have deteriorated between the fitting and the firewall, maybe I should have gotten the metal washers instead of soft rubber, but I wanted vibrations to be in check.

Just what I needed. Passing two quick connect hoses with a standard pipe thread fitting through a steel case. I didn’t know they made such a thing. Necessity dictates strange needs and I outdid myself on this one. Seller came through on this one.