Seal ring
AssigneeNok Corporation
InventorsShinya Nakaoka, Nobuyuki Eguchi, Naohiro Jotaki, Takaaki Yasudomi
Life of this patent
Estimating the term…
Abstract
A seal ring which maintains a stable sealing performance over a long term is provided. In a first seal portion 4, linear contact portions which come into linear contact with the sidewall surface of an annular groove on the unsealed fluid side are continuously extended over the whole circumference of the seal ring from one side of a separation portion 2 to the other side thereof, and the linear contact part provided at the convex part 21 of the separation portion 2, and the linear contact part provided at the concave part 24 of the separation portion 2 are located at a distance in the diametric direction of the seal ring.
Claims10
In a seal ring including a first seal portion which seals a sidewall surface of an annular groove on a unsealed fluid side A, the annular groove being provided in one of two members that are concentrically assembled so as to be relatively rotatable;
- and
- a second seal portion which seals a surface of the other of the two members;
- wherein an annular interspace between the two members is sealed by the seal portions;
- and
- a ring body of the seal ring is provided with a separation portion which is separated in one place in a circumferential direction of the seal ring;
- a seal ring characterized in that said first seal portion is provided with linear contact portions which come into linear contact with the sidewall surface of the annular groove on the unsealed fluid side, so as to extend continuously over a whole circumference of the seal ring from one side of said separation portion to the other side thereof;
- and
- that said linear contact portion which is provided on one side of said separation portion, and said linear contact portion which is provided on the other side of said separation portion are located at a distance in a diametric direction of the seal ring.
Dependencies are inferred from the claim text.