NASA NTRS · 19740000062
Improved circumferential shaft seal
Abstract
Comparative tests of modified and unmodified carbon ring seals showed that addition of helical grooves to conventional segmented carbon ring seals reduced leakage significantly. Modified seal was insensitive to shaft runout and to flooding by lubricant.
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Ludwig, L. P., Strom, T. N.. 1974-07-01. Improved circumferential shaft seal. https://ntrs.nasa.gov/citations/19740000062
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