Patent ID: 8662475

Claim:
A ball valve gasket structure, comprising: a housing base, having an accommodating area enclosed within the housing base, and a position limit area enclosed within a bottom side of the housing base; a leakproof washer, installed in the position limit area on the bottom side of the housing base; a ring-shaped slide unit having a top side and a bottom side, installed in the accommodating area, and including a plurality of ring-shaped steel plates and ring-shaped graphite plates stacked on one another, such that both of the top and bottom sides of the ring-shaped slide unit are ring-shaped steel plates, and the ring-shaped steel plate on the bottom side abuts a bottom of the accommodating area, and the ring-shaped slide unit having an arc surface portion disposed at an inner periphery of the ring-shaped slide unit; and a cover, coupled to the housing base for sealing the ring-shaped slide unit, such that a top side of the cover is bent from an external sidewall rim of the accommodating area and then snapped, and a bottom side of the cover abuts the ring-shaped steel plate on the top side of the ring-shaped slide unit; wherein the top side of the cover has a recess area enclosed within an external periphery of the cover, such that the external sidewall rim of the accommodating area is bent and then snapped onto the recess area.