A rigid metallic item, generally circular. It may be formed of segmented arcs. It is designed to prevent leakage of air in an engine, gas turbine, aircraft. It may be of various cross-sectional shapes. It may have mounting facilities. It may act as a spacer but its primary function is as an air seal.
NSN 2925-01-025-0082
NSN 6110-01-062-0252
NSN 5998-00-285-8613
NSN 4140-01-228-9602
NSN 5910-00-121-9914
NSN 6150-01-519-9309
NSN 5950-00-111-1366
NSN 5960-01-514-5433
NSN 5905-00-144-8471
NSN 6685-00-448-1235
NSN 5920-01-417-7306
NSN 6145-01-423-4734