According to engineer the item is not considered a critical safety item
A rigid item designed to maintain a predetermined space between two rotor, compressor, aircraft gas turbine engine. It may be a complete 360 degrees or a section thereof.
Classification: Parts of gas turbine aircraft engines, other than for use in civil aircraft
NSN 6105-01-591-4356
NSN 6150-00-826-6567
NSN 5855-00-337-3679
NSN 4140-01-215-1125
NSN 5925-01-289-7620
NSN 5855-01-458-1548
NSN 6240-01-523-9983
NSN 5915-01-352-9830
NSN 6220-01-536-1067
NSN 5999-01-600-2644
NSN 5895-00-617-6340
NSN 5935-01-144-5634