Rotatherm S881/B

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Rotatherm S881/B

Rotatherm S881/B
Request product

Rotatherm S881/B

Features

Rotatherm S881/B are precompressed rings made from pure graphite (≥ 99.85%) with embedded stainless steel reinforcement optimally positioned to suit the cross-section. No metal-to-metal contact with spindle or housing. They are ideally used as chamber sealing rings in high temperature and high pressure valves to avoid extrusion (particularly through large gaps).

Advantages

  • Do not harden
  • Long service life
  • Uncomplicated installation and removal
  • Low wear of the contact surface

Operating range

Valves
Pressure: p = 1.000 bar
Sliding velocity: vg = 2 m/s

Temperature
  • Continuous operation:
    t = -200 °C … +500 °C
  • Steam: tmax = +550 °C
  • Inert environment: tmax = +3.000 °C

Chemical resistance: pH = 0 ... 14
Resistant to almost all organic and inorganic acids, alkalis, oils and solvents.

Notes

The spindle and installation space must be clean and in perfect condition (as these are important if the seal is to work well for a long period). Adjust the valve spindle position so that it can be actuated in the packing ring tightening direction once the packing is partly sealed. Design and installation, see page 99 in the catalog.

Forms of supply

  • Precompressed rings with unique marking to indicate metal inserts
  • Custom production to drawing, measurements or other agreement

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The Eagleburgmann Group

Sealing technology for plants and machines

EagleBurgmann is one of the worldwide leading providers of industrial sealing technology. Mechanical seals, seal supply systems, magnetic couplings, carbon floating ring seals, expansion joints, gaskets and packings as well as comprehensive services are used wherever reliability and safety are needed.

Mechanical seals and more

Sealing technology by EagleBurgmann is used worldwide in oil and gas industries, refineries, the petrochemical, chemical, and pharmaceutical industries, food processing, energy, water, mining, paper, aerospace, and other industries. Close to 5,800 employees provide their ideas, solutions, and commitment so that customers can rely on our sealing technology.

What makes us stand out is our excellent quality, great innovative capacity, and an extensive product portfolio for nearly all industrial processes and fields of application. Our product portfolio includes everything from mechanical seals and seal supply systems to magnetic couplings, carbon floating ring seals, expansion joints, and gaskets and packings as well as comprehensive services. Since we are part of the German Freudenberg and Japanese EKK group, we have all the necessary resources for a firmly based reliable partnership.

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