Non rotating spacer for gas turbine engine

An assembly, comprising:

• a non-rotating spacer;
• and
• a mating part, the mating part configured to keep a first part axially spaced from a contact surface of the mating part, the mating part comprising:
• a first inner periphery and a second inner periphery, the first inner periphery having a larger perimeter than the second inner periphery, the contact surface extending radially inward from the first inner periphery and transitions into the second inner periphery;
• a pair of openings located in the first inner periphery;
• the non-rotating spacer configured to be inserted into the first inner periphery, the non-rotating spacer comprising:
• a perimeter of material having a first contact surface and a second contact surface, the first contact surface being opposite to the second contact surface, the perimeter of material also having an inner surface and an outer surface;
• a pair of slots located in the first contact surface, the pair of slots extending from the inner surface to the outer surface, the pair of slots do not extend through to the second contact surface such that the pair of slots are defined by three surfaces of the perimeter of material;
• and
• a pair of lugs, one of the pair of lugs disposed on one side of one of the pair of slots and the other one of the pair of lugs disposed on another side of the one of the pair of slots, the pair of lugs protruding radially outward from the outer surface;
• and
• wherein the pair of lugs are received within one of the pair of openings when the non-rotating spacer is located within the first inner periphery, and the pair of slots provide fluid communication from the inner surface to the pair of openings when the non-rotating spacer is located within the first inner periphery, and the pair of lugs prevent rotation of the non-rotating spacer when the non-rotating spacer is located within the first inner periphery.