Valve Packings

The packings do not contain any soluble components such as oils and are therefore not porous even at high temperatures. The surfaces are finely braided and seal against the components even without much pre-tensioning. The design is generally very resistant to extrusion.

Main application:

Main application: Armatures, valves, gate valves, door and lid seals, as well as slow speed applications in mixers and filters.


  • Surface roughness: shaft: Ra max 0.5 μm, housing Ra max 5 μm
  • Gap between shaft/housing or shaft/gland max 0.2 mm
  • Precompression after installation: ca 50 MPa for short time
  • Min. compression in service: ca 30 MPa
  • For pressure above 40 bar and frequently varying temperature and presure we recommend to use of Live Loading Systems

TA Luft and ISO 15848 certified packings can also be supplied on spools. To be TA Luft conform each packing ring must be precompressed in the stuffing box or a similar device to the recommended TA Luft ring densities.

Valve packings should always be used as pre-pressed rings.