When should the sealing ring be replaced?

If the sealing ring is seriously damaged and cannot be repaired by grinding, repair welding, bonding and heat treatment, or if the repair of the sealing ring is not as good as replacement, the sealing ring should be replaced or re-welded.


The so-called seal ring is seriously damaged, which refers to the serious mechanical damage and corrosion of the seal ring; Loosening and falling off of sealing ring; The sealing ring has large surfacing defects and cracks; The clearance of the sealing pair is too large or dropped; The sealing surface height is too low; Poor heat treatment quality, low performance, too low hardness, surface peeling and other serious defects, the existence of one of these serious defects, the general use of replacement or surfacing new cover.


To replace the new sealing ring, some technical problems should be solved. The material of the sealing ring should be selected according to the original design or working conditions, the size of the connection form of the sealing ring should be determined, and the technical process of the sealing ring should be selected. The replacement of the sealing ring is a highly technical and well-matched work. The replacement of sealing ring goes through three processes of removal, manufacture and gathering. Sealing rings made of rubber and plastic are generally fixed with inlays and bolts, and the replacement is relatively unified. What is difficult to replace is the fixed forms of compression molding, rolling and surfacing.                 

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