A wave-tooth composite gasket comprising an annular metal skeleton. The annular metal skeleton is flanked on the left and right by corrugated teeth set in the same boat as the annular metal skeleton. A soft non-metallic layer is also compounded on the surface of the wave teeth on the left and right sides of the annular metal skeleton. The flexible graphite composite gasket positioning ears are set on the outer circle of the annular metal skeleton, and the positioning holes are set on the positioning ears with at least three sliding slots evenly distributed on the inner wall of the positioning holes around the axis of the positioning holes. The sliding slot is inserted with a rejection block and an elastic member that drives the block towards the centre of the positioning hole and is protruding at the end of the slot.

At the same time, the annular metal skeleton as a support structure can effectively prevent the seal from collapsing and improve the structural strength and durability of the application; the positioning ears can provide a certain positioning effect when the gasket is equipped, here, in the practical application, the diameter of the stainless steel graphite composite gasket positioning hole can exceed the diameter of the flange fixing hole and the bolt, when fixing, the bolt will cross the positioning hole, the rejection block on the outer wall of the positioning hole in the elastic parts The rejection block on the outer wall of the locating hole is under the action of the elastic member.

When the bolt is fixed, the rejection block on the outer wall of the hole will be moved outward towards the center of the hole, because the elastic force of each elastic part is the same, so the rejection block on the circumference of the hole can be automatically centered on the outer circle of the bolt to ensure the accurate positioning of the gasket, and when the bolt is twisted, the rejection block will have a certain resilience, which prevents the bolt from twisting to produce a large change of stress on the positioning ear, thus effectively reducing the force deformation of the gasket, thus ensuring that the gasket can be flatly positioned between the two flanges. This ensures that the gaskets can be gasketed smoothly between the two flanges and improves the sealing performance of the gaskets.