Patent ID: 7837017
Filing Date: 2010-11-23
Classification: F16F,F16J

Abstract:
1. A high-friction fluid seal used for high-friction sealing, comprising a fluid seal lip provided on the working fluid filling side to intercept a working fluid; and a dust lip provided on the working fluid non-filling side (the outer side) of the fluid seal lip to intercept dust coming from the outside and prevent leakage of the working fluid to the outside, wherein by making an angle between an inclined face on the fluid seal lip side of the dust lip and a contact surface with which the fluid seal lip is in contact larger than an angle between an inclined face on the working fluid filling side of the fluid seal lip and the contact surface, the thickness of a working fluid film formed on the extension stroke by the dust lip is smaller than the thickness of a working fluid film formed on the extension stroke by the fluid seal lip, thereby substantially preventing the leakage of the working fluid past the dust lip to the outside.