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Metal Bellows Seal

For high or low temperature applications


  • Single seal
  • Balanced
  • Independent of direction of rotation
  • Stationary metal bellows

Product specification example


Seal face: High density carbon graphite, Silicon carbide
Seat: Silicon carbide (Q2)
Bellows: Inconel® 718 (M6)
Secondary seals: Graphite
Metal parts: 1.4404, Carpenter® 42 (T4)

Operating range

Pressure : p = vacuum … 20 bar ( … 290 PSI)
Temperature: t = -200 °C … +400 °C ( -320 °F … +752 °F)
Sliding velocity: vg = … 50 m/s (164 ft/s)
Viscosity: … 0.5 Pa·s

Solids content: 0.5 wt.%

Recommended applications

Refining technology
Power plant technology
Chemical industry
High and low temperature hydrocarbon services
Residual oil
Gas oil
Low temperature ethylene
Special rotating equipment

Applicable ranges shown in the product introduction are limit values for each standard material.
Applicable ranges, performance data and figures can serve only as a guide for selection and therefore in actual use there will be some cases where general specifications cannot be applied due to unknown factors or constraints.
Please check the applicability before use.
The contents are subject to change without notice for improvement.


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