Patent ID: 7942423
Filing Date: 2011-05-17
Classification: F16J

Abstract:
1. A lip type seal being mounted in an annular space between an operating member and a stationary member, and comprising: a resin-made seal body which is devoid of any exterior metal clamping ring and includes: a spring having a U-shaped section and being mounted in the cylindrical recessed portion, wherein the plate-shaped lip has indentations formed on at least one of: wherein indentations are also formed on an inclined sliding contact surface of the inner circumferential inner lip, and wherein the indentations have a triangular sectional shape, and a first angle of a first inclined surface at a side of an object to be sealed is larger than a second angle of a second inclined surface at an opposite side of the object to be sealed, wherein the first and second angles are respectively formed between the first and second inclined surfaces of the indentations having a triangular shape and the operating member.