Case Studies
Kaplan Blade Sealing — Oil In, Water Out
Challenge
Background
An original Kaplan hydro turbine was installed in 1978, refurbished in 1996, and was being refurbished again. The contractor’s biggest headache during the rebuild process is always the blade seals. The contractor reached out to Chesterton for our expertise and had EPS engineers come onsite to take measurements for replacements. While measuring the existing blade seals and hub, Chesterton noticed the current seals were held in place by some type of metal bracket. The bracket was not shown on the OEM drawing.
Polymer seal engineer measuring hub.
Solution
Product
EPS engineering recommended Chesterton® R22KN5 seals and spacers. These were made from AWC800 polyurethane for abrasion resistance and long life.
Turbine blades.
Results
Optimal Fit with Precise Measurements
The contractor installed eight new R22KN5 Seals, and spacers made from AWC800 in May 2022 on the blades. The contractor was ecstatic about the support provided by EPS engineering. The overall process was extremely smooth from measurement of seal hubs, fabrication of parts to specific dimensions, and installation.
Installed seals and spacers.
About Us
Chesterton® is a world leader in helping process industry companies and manufacturers improve the reliability and efficiency of their rotating, stationary, and fluid power equipment platforms. We are known across a wide range of industries for our award-winning pump and valve sealing solutions, applications expertise, equipment maintenance and wear-prevention products, and knowledgeable hands-on local service. Chesterton product range includes mechanical seals, packing and gaskets, industrial lubricants and coatings.
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EN602158. Issued 04/2025
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