High pressure seal assembly - has sleeve between housing and packing for second radial ring seal

摘要

A sealing arrangement for passage of machine components (3) to the inside of a cylinder block (1,4) has packing (6) located inside a housing (4) protected by a plate cover (10). A sealing sleeve (5) is located between the housing and packing, and a second seal (26) is arranged between housing and sleeve. The second seal has the form of a radial ring. The sleeve has a section with reduced diameter, part of this section having a groove for the radial sealing ring. ADVANTAGE - Improved operational safety and component life, reduced maintenance requirement.