SEAL RING - TPR CO LTD

Title:

SEAL RING

Document Type and Number:

WIPO Patent Application WO/2018/061222

Kind Code:

A1

Abstract:

The purpose of the present invention is to provide a seal ring that has low friction and low oil leakage and is capable of reducing shaft rotation torque even in states of high shaft rotation speed or housing rotation speed. In the shape of vertical cross-sections of the seal ring in the circumferential direction, a level difference part, which forms second widths a21 and a211 that are smaller than a first width a1, is formed from the seal ring outer circumferential surface 13-side to the seal ring inner circumferential surface 12-side. The level difference part is formed so that, in the seal ring circumferential direction of sealed fluid inflow, the center line M2 of the second width traces a path that moves along the circumferential direction toward the seal ring contact surface 14-side from the abutment end face on the inner circumferential side of a seal ring abutment part at one end to the abutment end face on the inner circumferential side of a seal ring abutment part at the other end.

Inventors:

YAMAGUCHI HITOSHI (JP)
OGA TEPPEI (JP)

Application Number:

PCT/JP2016/081337

Publication Date:

April 05, 2018

Filing Date:

October 21, 2016

Export Citation:

Click for automatic bibliography generation Help

Assignee:

TPR CO LTD (JP)

International Classes:

F16J15/26

Domestic Patent References:

WO2013094657A1

2013-06-27

Foreign References:

JPS50118140A	1975-09-16
JP2007078041A	2007-03-29
JP2015028382A	2015-02-12

Other References: