A Compressor (10), especially for a gas turbine, comprises a rotor (15) rotating about an axis (17) and a housing (11) coaxially surrounding said rotor (15), thereby defining a flow channel (14) between rotor (15) and housing (11) for a fluid to be compres...

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 fo...