Abradable seal having improved durability

Details Abradable seal having improved durability Abradable seal having improved durability

2005-05-31

2005-05-31

Sandy, Robert J. (Department: 3677)

Seal for a joint or juncture

Seal between relatively movable parts

Close proximity seal

C277S355000, C415S173300

Reexamination Certificate

active

06899339

ABSTRACT:
An air seal for use in a gas turbine engine provides improved durability, particularly at higher temperatures. The seal includes a seal substrate and an abradable seal layer on the substrate. The abradable seal layer is composed of a densified polyimide foam, preferably a thermomechanically densified foam. The seal is bonded to a stationary engine component such as a stator box or a case.

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