Split ring seal of a centrifugal pump

Rotary kinetic fluid motors or pumps – Bearing – seal – or liner between runner portion and static part – Means to seal radial flow pump runner inlet from outlet

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4152171, F04D 2908, F04D 2902

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active

048676381

ABSTRACT:
A split ring seal of a centrifugal pump comprises two rings that consist of a sintered material and that are respectively connected in a frictional or positive manner to a front cover disk of the impeller and to the pump housing which are made of a cast polyamide as produced by the activated anionic polymerization of monomeric laurinlactam.

REFERENCES:
patent: 3381620 (1966-05-01), Cushing et al.
patent: 3779667 (1973-12-01), Johnson
patent: 3826509 (1974-07-01), Frank et al.
patent: 3958894 (1976-05-01), Rowley et al.
patent: 4023918 (1977-05-01), Stahl
patent: 4207024 (1980-06-01), Bill et al.
patent: 4269903 (1981-05-01), Clingman et al.
"Werkstofftechnik", vol. 17, Oct. 1986, pp. 378-384.
"CAV-8-86", Aug. 1987, pp. 87-90.

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