Accession Number : ADD004658

Title :   Adjustable Dynamic Face Seal.

Descriptive Note : Patent Application,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON D C

Personal Author(s) : Arena,John P

Report Date : 25 Nov 1977

Pagination or Media Count : 8

Abstract : A fluid sealing system has an adjustable dynamic face seal and a plurality of static seals. The dynamic seal is formed by a seal ring that moves in its axial direction against a mating ring in response to forces applied. In operation a fluid film appears between the seal ring and mating ring. A circumferential chamber at an end of the seal ring is pressurized from an external source through a tube connecting from an air pressure source to the circumferential chamber. This permits a variable external control on the seal ring. In addition an external ambient pressure is applied to the seal ring in the same axial direction. A plurality of static seals are utilized to prevent the flow of the surrounding fluid throughout the system and for providing a fluid boundary for the air pressure. (Author)

Descriptors :   *Patent applications, *Seals(Stoppers), *Shafts(Machine elements), *Propellers(Marine), Dynamic loads, Fluid dynamics, Static loads, Rings, Couplings, Pressure, Fluid flow, Boundary layer flow

Subject Categories : Adhesives, Seals and Binders
      Marine Engineering

Distribution Statement : APPROVED FOR PUBLIC RELEASE