Description

When you’re building or repairing hydraulic lines, sometimes you need to pass a connection through a panel or wall while keeping everything sealed up tight. This 5/8 inch bulkhead union does exactly that—it creates a secure, leak-free connection that passes through a bulkhead, panel, or hydraulic tank wall. The included locknut holds everything in place from the back side, so you get a professional installation that won’t work loose under vibration.

What You’re Getting

Male OFS (O-ring Face Seal) threads on both ends for reliable, leak-free connections
Solid steel construction handles high hydraulic pressures and field vibration
Locknut included for secure mounting through panels or bulkheads
5/8 inch size fits common hydraulic line applications
Direct replacement for worn or damaged bulkhead fittings

Built for Real Farm Work

This fitting is perfect for tractors, loaders, and implements where hydraulic lines need to pass through frame rails, tank walls, or control panels. Whether you’re plumbing a hydraulic tank, routing lines through a loader mast, or connecting remote hydraulics through a panel, this bulkhead union keeps everything neat and leak-free.

Made to Last

Steel construction means this fitting won’t crack or fail like plastic alternatives might under pressure. The OFS thread design creates a metal-to-metal seal with an O-ring, which handles hydraulic pressure spikes and temperature changes better than pipe thread connections. AgSmart builds these fittings to handle the demanding conditions of farm equipment operation.

Installation Notes

Thread the fitting through your bulkhead hole, then tighten the locknut from the back side to secure it in place. Make sure to use the proper O-rings on both OFS connections—they’re what create the seal. Clean threads before assembly and don’t overtighten, as this can damage the O-ring sealing surfaces.