Patent ID: 10788129

Abstract:
A sealing device that is applicable to high-speed rotation applications and has an increased pressure resistance is provided. The sealing device includes: a first side discharge valve located on a first side, on which a fluid is to be sealed, of an outer circumferential sealing surface, the first side discharge valve extending radially outward toward the first side for allowing a gas in a space between an inner circumferential surface of a housing and an outer circumferential sealing surface to be discharged toward the first side while blocking a gas from entering the space from the first side; and a second side discharge valve located on an atmosphere side that is opposite to the first side with respect to the outer circumferential sealing surface, the second side discharge valve extending radially outward toward the atmosphere side for allowing the gas in the space to be discharged toward the atmosphere side while blocking a gas from entering the space from the atmosphere side.