# Valve stem seals

Flexible graphite and carbon-graphite valve seals for tight shutoff at temperature.

Family: Sealing applications

## Processes
- Seat valves
- Process valves

## Challenges
- Seat/packing leakage
- Cycling wear
- Aggressive media

## Advantages
- High-temperature sealing
- Low friction
- Broad chemical compatibility

## Limitations
- Does not replace metals in high-load structural seals without proper design
- Oxidation in air at high temperature
- Chemical compatibility of the medium

- [Applications](https://esgraf.com/en/applications)
- [Alternate](https://esgraf.com/aplicaciones/valvulas-sellos-vastago)