Top 5 Materials for High-Pressure Water Valve Seals, Gaskets and Packing

When it comes to designing high-pressure hydraulic circuits, materials matter. In fact, the materials of construction you choose for your high-pressure water valves have a long-term impact on the performance of the valve as well as the overall hydraulic system. 

In the previous post, we covered selecting industrial valve materials for the valve bodies, seats and spools. The corrosion level, temperature and pressure of the application will impact your choice of materials. Cost is also an important consideration when analyzing various metals and alloys. 

But what about the seals, gaskets and packing? To help guide your selection, here are some characteristics of popular materials of construction for these industrial valve components:

1. PolyurethaneChoosing-Valve-Materials-blog4.jpg
  • Highly durable
  • Designed for temperatures up to 200 degrees Fahrenheit
  • Ideal for pressures up to 6,000 psi
  • Excellent abrasion resistance

2. Viton
  • Excellent chemical resistance
  • Works well at high temperatures

3. Polytetrafluoroethylene (ptfe)
  • Extremely low friction
  • Designed for a wide range of pressures and temperatures

4. glass-filled ptfe
  • Improved creep resistance
  • Improved wear resistance and heat transfer

5. polyetheretherketone (peek)
  • Ideal for steam applications
  • High temperature rating
  • Good corrosion resistance


counting the cost

As we've discussed in past blog posts, application parameters and flow media incompatibilities will generally drive valve material decisions, with cost coming in almost immediately behind. In most cases, you should select the lowest cost valve that performs the intended function and is constructed of materials that are compatible with the flow  media. 

For some applications, the service or replacement schedules of certain valve components can be extended by using a more expensive material of construction. That additional cost may be worth it, especially in applications where scheduled downtime must be minimized. 

Looking for specification details on high-pressure water valve materials? Ready to make an industrial valve purchase? Request a quote on high-pressure water valves constructed of superior materials from Hunt Valve.

Request a valve product quote