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Noncontact seals of a positive displacement pump are considered. Experiments confirm that non contact seals of stepped ridge type may be employed. Empirical formulas are proposed for the change in liquid flow rate in forward and reverse piston motion.

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This page is a summary of: Noncontact Seals for an Oil Pump, Russian Engineering Research, August 2024, Allerton Press,
DOI: 10.3103/s1068798x24701879.
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