Title:
シール材
Document Type and Number:
Japanese Patent JP6929807
Kind Code:
B2
Abstract:
To provide a seal material having a configuration capable of further suppressing high-pressure hydraulic oil from being accumulated between a first seal material and a second seal material.SOLUTION: An annular sealing material 100 is provided in a sliding interval between a cylinder and a rod in a hydraulic/pneumatic device, and partitions a high-pressure side and a low-pressure side that are placed in a sealing groove provided in the cylinder. The annular sealing material comprises: an annular seal body 10; a pressure accumulation preventing groove 11 provided on the high-pressure side of the sealing material body 10, and extending in a radial direction; and a pressure accumulation opening groove 12 provided at a position corresponding to the pressure accumulation prevention groove 11 on the outer peripheral side surface of the seal body 10, and having a form extending along a sliding direction of the rod.SELECTED DRAWING: Figure 5
Inventors:
Junichi Yamashita
Application Number:
JP2018032267A
Publication Date:
September 01, 2021
Filing Date:
February 26, 2018
Export Citation:
Assignee:
Bulker Co., Ltd.
International Classes:
F16J15/3236; F16J15/3204
Domestic Patent References:
| JP2014214769A | ||||
| JP2008039080A |
Foreign References:
| US6290235 |
Attorney, Agent or Firm:
Fukami patent office