| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an oil-submerged resin composition having a low friction coefficient, excellent wear resistance and the like in oil, to provide an oil-submerged sliding member produced by molding the oil-submerged resin composition, and to provide a seal ring in particular that is used in a hydraulic mechanism of an automobile as the oil-submerged sliding member and that has sufficient flexibility so that the seal ring causes no breakage when the seal ring is mounted even if a gate portion of an injection mold is located on the inner diameter side of the portion diametrically opposite a pair of abutments of the ring body where there occurs large distortion when mounted and has high wear resistance required of the seal ring. <P>SOLUTION: The seal ring is formed by injection-molding the oil-submerged resin composition prepared by blending a polyether ketone resin with a spherical carbon material which is of a spherical form and composed of carbon as a main constituting element wherein the spherical carbon material has a true specific gravity of not less than 1.3 to less than 2.0 and the blending amount V (volume%) of the spherical carbon material is in a range represented by numerical formula (1), provided that the average particle size of the spherical carbon material is denoted as d (μm). <P>COPYRIGHT: (C)2006,JPO&NCIPI |
