See Figure 148. After the molded seals are taken from the cavities, any excess rubber (flash) is removed. The sealing lips may be knife-trimmed in an automated process (15). Automation may also be used to insert garter springs, which were produced previously in a separate preparatory stage (16), into the sealing lips. Spring insertion may be done by hand for low volume, unusual seal designs or for very large seals (17).

The seal lips are greased if the application requires lip lubrication. Though each step of the manufacturing process is carefully controlled and monitored to ensure product quality, a final audit inspection is conducted on a sample of the finished parts taken from a randomly selected box (18). All parts are shipped when this final inspection has been successfully completed (19).

HOW A SHAFT SEAL IS MADE MAIN PAGE