SYSTEM, METHOD AND APPARATUS FOR SPRING-ENERGIZED DYNAMIC SEALING ASSEMBLY

摘要

A seal assembly is disclosed. The seal comprises a metal spring bonded to an elastomer body that is coupled to a polymer ring. The spring may comprise a cantilevered, overlapped metal strip. The elastomer and polymer mechanically interlock with radial members. The elastomer has contacting surfaces configured in outward extending radii to enhance forward edge loading and oil removal from the dynamic surface. In hydraulic service, the seal prevents the egress of hydraulic fluid and ingress of foreign particles.

主权项

1. A system for linear motion, comprising:
a housing having a bore; a rod located in the bore for axial motion relative thereto, the rod having an outer surface; a seal assembly located in the bore for sealing between the housing and the rod, the seal assembly comprising:
a polymer ring;an elastomer body joined to the polymer ring, the elastomer body comprising:
an axial end defining a contact point back angle of greater than 90° as measured with respect to the outer surface of the rod, anda scraper face contacting the rod along the entire axial length of the scraper face, the scraper face terminating at the axial end of the elastomer body, wherein, prior to installation of the seal assembly between the housing and the rod, the scraper face is concave along an entire axial length thereof; anda spring joined to the elastomer body for biasing portions of the elastomer body into contact with both the housing and the rod.