Sealed type piston ring

The utility model relates to a sealed type piston ring which is composed of a circular ring body (2) and an opening (3). A ring body opening (4) is arranged at the opening (3), and the opening (3) is larger than the ring body opening (4). Gap connecting positions are arranged between the ring body opening (4) and the opening (3) of the circular ring body (2). All the gap connecting positions have the same orientation, and a plurality of piston ring grooves (5) are arranged on the ring body (2) disposed on two sides of the ring body opening (4). Compared with a traditional piston ring, the sealed type piston ring is provided with the plurality of piston ring grooves on the ring body, and the piston ring grooves can effectively seal the piston ring and a piston when the piston ring is connected with the piston so as to achieve gas sealing of the whole circulation and sealing ports in a slide block mode. Tension everywhere is balanced, sealing effect is improved, and service life of the piston ring is prolonged.