Sealing Device

A sealing device ( 1 ) in which, even when a seal member ( 6 ) having a core metal ( 4 ) and a sealing section ( 5 ) is fitted on a piston member ( 3 ) that axially reciprocates in a bottomed circular cylinder ( 2 ), force required for the fitting can be suppressed to a low level and as a result the...

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1. Verfasser: KANZAKI YOSHIYUKI
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:A sealing device ( 1 ) in which, even when a seal member ( 6 ) having a core metal ( 4 ) and a sealing section ( 5 ) is fitted on a piston member ( 3 ) that axially reciprocates in a bottomed circular cylinder ( 2 ), force required for the fitting can be suppressed to a low level and as a result the core metal ( 4 ) of the seal member ( 6 ) is not deformed. The wall thickness of a circular cylindrical portion ( 42 ) fitted on the piston member ( 3 ), of the core metal ( 4 ) is reduced to provide the circular cylindrical portion with spring properties. Alternately, slits ( 44 ) are equally arranged on the circumference of the circular cylindrical portion ( 42 ) of the core metal ( 4 ) or, alternatively, the circular cylinder portion ( 42 ) is constructed from claws ( 45 ).