JPH02136858U

JPH02136858U -

Info

Publication number: JPH02136858U
Application number: JP1989046081U
Authority: JP
Priority date: 1989-04-19
Filing date: 1989-04-19
Publication date: 1990-11-15

Description

[Brief explanation of the drawing]

第１図は、本考案にかかる凸条を運動面に設け
たロツド用Ｕパツキンを一部断面で示す側面図；
第２図ａ，ｂ，ｃ，ｄおよびｅは、本考案にかか
るシール装置の運動面に設ける凸条および凹溝の
各種形状を示す断面図；第３図は、シールリング
の外周面に本考案にかかる凹溝を設けた例を示す
側面図；第４図は、別の変更例を示す同じく側面
図；および第５図は、凹溝を交差させて設けたロ
ツド用Ｕパツキンを一部断面で示す側面図である
。１：シール装置、２：シール本体、３：運動面
、４：リツプ部、５：凸条、６：凹溝、７：シー
ル部、８：端面（底面）、９：腰部。 FIG. 1 is a side view, partially in cross section, of a U-packet for a rod in which a protruding strip according to the present invention is provided on the moving surface;
Figures 2a, b, c, d and e are cross-sectional views showing various shapes of protrusions and grooves provided on the moving surface of the sealing device according to the present invention; A side view showing an example in which grooves according to the invention are provided; FIG. 4 is a side view showing another modified example; and FIG. FIG. 3 is a side view shown in cross section. 1: Seal device, 2: Seal body, 3: Movement surface, 4: Lip portion, 5: Convex ridge, 6: Concave groove, 7: Seal portion, 8: End surface (bottom surface), 9: Waist portion.

Claims

[Claims for Utility Model Registration] (1) A sealing device that seals fluid pressure by being attached to a piston or rod that moves reciprocally or rotatably, in the axial direction in the moving plane of the seal body made of an elastic material. A sealing device comprising a plurality of protrusions and/or grooves that are parallel or inclined in the axial direction and have a length that does not reach the seal portion from one or both end faces to the opposite end face. (2) The seal device according to claim 1, wherein the protrusion has a height that does not protrude from the seal portion of the seal body in the radial direction.