Submitted name is shroud, stage 1
An item within a case, compressor, aircraft gas turbine engine, designed to surround or partially surround a rotor, compressor, aircraft gas turbine engine. It's primary purpose is to protect other components of the engine in the event of an impeller or rotor break up.
Classification: Parts of gas turbine aircraft engines, other than for use in civil aircraft
NSN 6220-00-806-7666
NSN 5915-01-202-8426
NSN 6220-01-285-6462
NSN 5920-00-644-3285
NSN 5905-01-279-1017
NSN 5920-01-492-6512
NSN 5935-00-107-8287
NSN 5920-01-182-3268
NSN 6620-00-203-9466
NSN 4140-00-172-1804
NSN 5930-00-226-8016
NSN 5950-00-686-9945