A SEALING ARRANGEMENT, HYDRAULIC SYSTEM COMPRISING THE SAME AND A BACK UP RING FOR THE SEALING ARRANGEMENT

摘要

There is described a sealing arrangement for inserting in a groove in a hydraulic system to form a seal between two surfaces in the system. The sealing arrangement comprises an outer ring and an inner ring arrangeable co-planarly and concentrically in the groove. The inner ring comprises a resiliently deformable material and the outer ring is more rigid than the inner ring and is for supporting the inner ring in the groove. The outer ring comprises an inner surface facing substantially radially inwardly of the outer ring and the inner ring comprises an outer surface facing substantially radially outwardly of the inner ring. The inner surface of the outer ring describes a surface recess that accepts at least a portion of the outer surface of the inner ring.