Description

Whether you’re capping off an unused port on your sprayer, sealing a test fitting on a hydraulic line, or plugging a temporary connection in your irrigation setup, this little poly cap gets the job done. When you’ve got threaded fittings that need to stay sealed and clean, you’ll appreciate having the right size cap on hand—and at 3/8 inch, this one fits a lot of common agricultural applications.

What You’re Getting

Durable polypropylene construction that won’t crack or corrode like metal caps
3/8 inch NPT threads for a secure, leak-free seal
Chemical resistant design that handles fertilizers, herbicides, and other ag chemicals
Lightweight but tough enough for field conditions

Built for Real Farm Work

This cap works great on sprayer systems where you need to seal off boom sections or test ports, irrigation lines where temporary connections need plugging, and hydraulic systems on tractors and implements. The 3/8 inch size is common on smaller fittings throughout agricultural equipment, so it’s handy to keep a few around the shop.

Made to Last

Polypropylene doesn’t rust, corrode, or break down from UV exposure like some materials. This cap stays flexible in cold weather and won’t get brittle from chemical exposure. It’s the kind of simple, reliable part that just works when you need it.

Installation Notes

Just thread it on hand-tight—no need to over-torque and risk cracking the threads. If you’re using it on a system with pressure, make sure the threads are clean and in good shape for the best seal.