NASA NTRS · 19760000079
Hydrostatic lift-off seal
Abstract
Interpropellant turbopump oxidizer seal consists of smooth flat surface on back of second-stage oxidizer impeller, floating seal ring, semistatic piston ring secondary seal, and low pressure flexible-bellows static secondary seal. Seal performs static sealing at rest and controlled leakage sealing in operation.
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Buckmann, P. S.. 1976-03-01. Hydrostatic lift-off seal. https://ntrs.nasa.gov/citations/19760000079
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