For no. 4 bearing
A rigid item, fabricated from a heat resistant allow, with or without insulation material added. designed to protect parts, areas or systems of an engine, gas turbine, aircraft from excessive heat damage. see also insulation blanket, thermal, aircraft gas turbine engine.
Classification: Parts of gas turbine aircraft engines, other than for use in civil aircraft
NSN 5960-01-359-4257
NSN 6650-01-310-7403
NSN 6650-00-400-7621
NSN 5910-00-681-3003
NSN 2925-01-575-3192
NSN 2925-00-188-5003
NSN 5960-00-281-0824
NSN 5835-00-998-2151
NSN 5975-00-813-6801
NSN 6130-01-010-6094
NSN 6650-01-202-9143
NSN 6135-00-603-4859