A rubber ring with a circular cross-section is installed at the tapered surface between the floating seal ring and the floating seal seat, and the rubber ring is deformed by axial compression in the sealing cavity formed by the floating seal seat under the action of the assembly pre-tightening force , Play a sealing role. Including O-shaped sealing ring, V-shaped sealing ring, X-shaped sealing ring, Y-shaped sealing ring, etc.

The conical gap inside the floating seal ring facilitates the entry of lubricating oil into the sealing surface. The lubricating oil enters the sealing gap through capillary action, centrifugal action during rotation, and increased internal pressure in the sealed cavity after the temperature rises, forming a very thin oil film, thus achieving sealing, lubrication and cooling, and also avoiding double floating The rubber ring is aging and deformed and loses elasticity caused by excessive wear and heat on the contact end surface of the sealing ring. When the bright belt of the floating seal ring wears out, the elasticity of the rubber ring can also play a certain role in automatic compensation.