Page 295 - Root Cause Failure Analysis

Seals and Packing 283

Table 30-1 Common Failure Modes of Packing and Mechanical Seals

iE PROBLEM

dul

THE CAUSES w y

Source: Integrated Systems, Inc.

Chemical Attack

Chemical attack (i.e., corrosion or chemical reaction with the liquid being sealed) is
another primary source of mechanical seal problems. Generally, two primary factors
cause chemical attack: misapplication or improper flushing of the seal.