Plugs
Plugs fit inside a threaded pipe fitting to close off a hydraulic or pneumatic system. Distinguished from Caps, which fit on the outside rather than the inside.
- Often used on systems that require maintenance, such as draining fluids or gases.
- Stocked in malleable iron, forged steel, and both cast and forged stainless.
Sizes are Nominal Pipe Size (NPS) - size chart
![Pipe Fittings Plugs](https://www.steelsupplylp.com/uploads/category/_800xAUTO_fit_center-center_100_none/Pipe-Fittings-Plugs.jpg)