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Male O-ring Boss to Male Pipe Thread Hydraulic Adapter

Original price was: $4.10.Current price is: $2.55.

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SKU: SMA-478-6401108 Category:

When you need to connect different types of hydraulic fittings on your tractor or implement, mismatched threads can bring your work to a halt. This handy adapter converts between O-ring boss and pipe thread connections, letting you hook up hydraulic lines that wouldn’t otherwise fit together. Whether you’re plumbing a new hydraulic cylinder, connecting aftermarket implements, or making field repairs, this steel adapter gets the job done right.

What You’re Getting

  • 5/8 inch male O-ring boss (7/8-14 thread) on one end for secure, leak-free sealing
  • 1/2 inch male pipe thread on the other end for standard pipe connections
  • Heavy-duty steel construction that handles high hydraulic pressures
  • Direct replacement for OEM adapters – no modifications needed

Built for Real Farm Work

This adapter is essential for agricultural operations involving hydraulic equipment like loaders, three-point implements, and hydraulic cylinders. You’ll find this setup on everything from utility tractors running hydraulic attachments to larger machines with complex hydraulic systems. It’s perfect for connecting hydraulic manifolds, quick-release couplings, and other hydraulic components that use different thread types.

Made to Last

Steel construction stands up to the daily grind of farm work, handling the bumps and vibration that come with field operations while maintaining reliable connections season after season. The O-ring boss end provides superior sealing compared to pipe threads alone, reducing the chance of leaks that can cost you expensive hydraulic fluid.

Installation Notes

Thread the adapter hand-tight first, then use proper wrenches to achieve final tightness without over-tightening, which can crack the fitting. Clean all hydraulic fittings thoroughly before installation to prevent contamination of your hydraulic system. The O-ring boss end requires a new O-ring for proper sealing – don’t reuse old, hardened O-rings that can leak under pressure.