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CHETRA Mechanical Seals for Refineries and the Petrochemical Industry

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CHETRA Refinery

In refineries and the petrochemical industry crude oil is processed into finished products.Sealing is needed for a great diversity of media in various states of matter: Typical processing tasks deal with media close to boiling point, substances with a lot of solid particles and others that are highly volatile, at temperatures ranging from very low to very high (-150°C to +400°C). These media, some of which are explosive and polluting, are subject to regulations imposed by TA-Luft (clean air act), ATEX, API, TÜV (German technical monitoring association) and others.

These aspects as well as the need for cost effectiveness – long MTBF/MTBR – are taken into account by CHETRA as of the basic conception of the mechanical seal and in the selection of suitable accessories and support with sound advice on applications.

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The results are innovative and often customised solutions based on decades of experience.

The CHETRA delivery range contains both tailor-made products and high-quality standard seals, characterised by:

  • Robust design with extensive safety margins.

  • Protection of sensitive components.

  • Solid rotary seal rings and stationary seats in self-aligning arrangements.

  • Stationary design, if applicable.

  • Special seal face geometry.

  • Controlled circulation guidance for optimal heat removal.

  • Material optimisation; use of suitable materials, some with patented surface treatment – use of API 682-approved materials.

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