Novel butterfly valve sealing element

The utility model provides a novel sealing element of a butterfly valve. The butterfly valve comprises a valve body, a valve butterfly, a valve seat and a sealing assembly. The valve body is providedwith a two-way pipeline; valve seat arranged on passage, the valve butterfly overturns at the position of the valve seat; a sealing assembly is arranged between the valve butterfly and the valve seat;when the valve butterfly is in a closed state; the valve butterfly, the valve seat and the sealing assembly are tightly attached to form sealing. The sealing assembly is mounted on the valve seat; the sealing assembly comprises a pressing plate and a sealing ring; a bolt hole is formed in the pressing plate; a matched bolt hole is also formed in the valve seat; according to the utility model, thesealing surface of the sealing assembly is transferred to the valve seat, so that the sealing assembly can be fixed on the valve seat, the sealing assembly is prevented from being damaged due to theimpact of water flow when ro