バルブステムシール

Title:

バルブステムシール

Document Type and Number:

Japanese Patent JP6575606

Kind Code:

B2

Abstract:

A valve stem seal with significantly improved sealing performance while improving workability when fitting the valve stem seal to a valve stem guide.An inner peripheral surface of a fitting section (20B) is provided with a plurality of annular seal protrusions which respectively include first (25a, 26a) and second inclined surfaces (25b) and (26b), a first seal protrusion (25) which is closest to the seal section (20A) is configured so that an inclination of the second inclined surface (25b) is smaller than that of the first inclined surface (25a), and a second seal protrusion (26) which is farthest from the seal section (20A) is configured so that an inclination of the first inclined surface (26a) is smaller than that of the second inclined surface (26b).The valve stem seal can comprise a plurality of said first seal protrusions (25) and a plurality of said second seal protrusions (26).

Inventors:

Takayuki Oyama
Nobuhiro Nishimura
Hiroshi Onodera
Rare Masamichi

Application Number:

JP2017555062A

Publication Date:

September 18, 2019

Filing Date:

December 06, 2016

Export Citation:

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