What is Valve Stem Packing, and What is It Used for?

For fluid containment, all sorts of tools are used across different industries. There are numerous variables that need to be considered, from the chemical inertness of the material, how it reacts to different changes in the environment and other factors. One of the most heavily used products is valve stem packing. Here’s what it is and why it’s so heavily used in numerous industries:

Closeup of valve stem packing.

Valve Stem Packing

Valve packing is used across stuffing boxes and valve stems, where we use valve packing to stop leaks with a string sealant. The strings consist of PTFE or graphite, allowing the strings to be durable while fairly malleable. They’re heavily used across watertight systems and designed to work on all kinds of surfaces.

Valve packing is sued across numerous industries as it’s easy to work with while being a cost-effective solution that’s also fairly reliable. It’s considered a jack of all trades by many.

Commonly Used Materials

The most common option in valve packing is PTFE, which many people know as Teflon. There are certain combinations with which PTFE is used in certain cases, with carbon and silica being used alongside PTFE. The other material is graphite, which is used when high temperatures are a concern. Both of these compounds are fairly reliable, offering great shelf life to valve stem packing.


The main goal of valve packing is to contain leaks. It’s one of the go-to options for numerous industries where liquid has to be moved and employed in plumbing and chemical transport. But it’s also important to keep stuffing boxes, and valve stems from suffering from wear and tear. So,in assemblies where the two of them are used, valve packing also has a necessary role there.

Because of their affordable costs and practical solutions, companies prefer having valve stem packing in large quantities to employ quick fixes in case of an emergency.

Want the optimal tools for NETZSCH Industrial Mixer for a wide range of operations and processes? Get in touch with us at Robco of America for streamlined solutions. Our company develops custom-designed seals, and we have the knowledge and experience of developing solutions that you can count on.

We also develop mechanical seals for agitators, pumps, compressors, reactors, centrifugal pumps, and bead mill units. If you’re looking for mechanical seal repair services,call 1-800-662-0585 for technical supportor email at sales@robcoamerica.com.

Leave a Comment

Your email address will not be published. Required fields are marked *