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News

Design of floating oil seal sealing surface

  • Author:Alice
  • Release on :2020-06-08
Design of sealing surface Temporary seal The ring is divided into aircraft type and circular type.


The flat type is more common. The spherical type is divided into two types: single spherical surface and dual spherical surface. The characteristic of a circular sealing surface is to ensure the formation of a closed circular sealing line when in contact. In fact, under the action of axial force, the float seal ring is slightly deformed, the contact area forms a very narrow edge, the seal has high reliability and good heat dissipation performance. With the increase of wear degree, the floating seal ring continues to deteriorate, allowing the contact surface to continuously move inward until it reaches the inner diameter of the sealing surface, the service life of the floating seal ring Expansion occurs. The area of ​​the floating seal ring from the sealing surface to the inner diameter is typically designed in a stepped, internal conical (tilt) or inner spherical design. The advantage of an internal conical surface (inclined surface) or internal spherical design is that the lubricating oil enters the sealing surface through centrifugal force and capillary action, ensuring adequate lubrication and cooling of the sealing surface. For integrally rigid floating seals, in principle, the contact seal surface can be moved inward to the internal diameter of the floating seal.