A radial sealing assembly comprises an upper pressing plate, a protection sheet, a positioning plate, a funnel-shaped sealing ring, a lower pressing plate and a corrugated sealing ring. The upper pressing plate is provided with at least two convex connecting hooks for connection with the positioning plate； the lower pressing plate is provided with at least two connecting slots for connection with the positioning plate； the positioning plate is provided with at least two connecting slots for connection with the upper pressing plate and at least two convex connecting hooks for connection with the lower pressing plate； and both the upper pressing plate and the lower pressing plate are connected to the positioning plate by adopting concave-convex engagement structures.
