Description
When you’re working on hydraulic lines or need to seal off an unused port, you need a cap that’s going to hold tight and keep the dirt out. This 1/4 inch female NPT cap screws right into place and gives you a solid seal that won’t back out when things get bumpy in the field.
What You’re Getting
- Rated for 6000 PSI working pressure – handles high-pressure hydraulic systems with ease
- Standard 1/4-18 NPT threads for a secure fit in most hydraulic ports
- 3/4 inch hex head makes installation and removal simple with standard wrenches
- Heavy-duty steel construction that won’t crack or strip under normal use
Built for Real Farm Work
This cap is perfect for sealing hydraulic ports on tractors, implements, and farm equipment when you need to cap off unused connections or protect open ports during maintenance. Whether you’re working on loader circuits, remote hydraulics, or implement connections, this cap keeps your system clean and sealed.
Made to Last
Built to handle the vibration, temperature swings, and high pressures that come with farm hydraulics, this AgSmart cap won’t let you down when you need a reliable seal. The steel construction resists corrosion and holds up to the punishment of daily farm use.
Installation Notes
Thread this cap on by hand first to avoid cross-threading, then tighten with a 3/4 inch wrench. Don’t over-tighten – the NPT threads create their own seal as they engage. Keep a few of these on hand for emergency repairs and system modifications.



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