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back up seal

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Product Summary

For back up seal, in a twin spool gas turbine engine, a bellows serves to bias a carbon seal against its seal plate and a piston ring back-up seal spaced racially outward and axially from the carbon seal provides a controlled leak path in the event the bellows fails.

A back up seal is provided for a connector which must be reliably sealed in applications where the connection is made and undone as part of the normal use of the connector. The seal is particularly well suited to on-off tools used in down whole applications. The seal comprises of a nonmetallic insert holding bonded seals, preferably made of rubber. The nonmetallic insert provides support against seal extrusion.

A back up seal is a pump assembly having an impeller for pumping a fluid from an intake to an outlet, a prime mover for driving the impeller, and a primary mechanical seal assembly between the prime mover and the impeller which is located in housing.

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