EagleBurgmann international
EagleBurgmann WORLDWIDE
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HR seals: cost and performance are all just right
You can count on it
Electrical or diesel-driven dredger pumps have to run continuously in order to be cost-effective. This cannot be achieved reliably with conventional lip seals, due to high pressures and speed of rotation.
There is also the trend towards building dredgers with even larger pumps. The cost of maintenance is thus increasingly difficult and expensive.
Extending the service life of the seal is therefore an important factor in the reliability and availability of the pump, and thus of significant interest to any dredging equipment operator. By implementing EagleBurgmann HR mechanical seals, significant cost savings can be achieved right away:
Comparative calculation: Lip seals vs. mechanical seal
Saving in the first year: € 270,000 = 67 %!
In the subsequent years the seal can be serviced, hence no costs for replacement will occur.
Lip seals
- Purchase costs: € 15,000
- Costs of replacing the lip seals including pump downtimes, loss of production, service engineers: € 85,000
- Lip seal service life: 3 months*
- Annual cost of operating the pump: 4 x (85,000 +15,000) = € 400,000
* The short service life is caused by the very high p*v value (combination of pressure and speed).
Mechanical seals
- Purchase costs: € 45,000
- Cost of replacing the mechanical seal including pump downtimes, loss of production, service engineers: € 85,000
- Service life of a mechanical seal (single seal with quench): 12 months
- Annual cost of operating the pump: 1 x (85,000 + 45,000) = € 130,000
Disclaimer: All technical specifications are based on extensive tests and our many years of experience. The diversity of possible applications means, however, that they can serve only as guide values. We must be notified of the exact conditions of application before we can provide any guarantee for a specific case. Subject to change.
Related brochure
HR seals - The robust and economical solution for media with high solids content
Details about the HR series
Additional information about the HR series can be found here...
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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.