Used on x series xh model direct acting brake. 6.690" outside diameter gasket for "xh" brake inner bolt circle 2 holes (.406 in. dia.) are semicircle tabs that protrude out into the aperture with an outside radius of .50" from the bolt circle of 5.875" equally spaced bolt holes
Used on actuator assembly, np2000 propeller system 1610-01-513-1214, special electronic aircraft e-2c. 1.446" outside diameter expanding concentric ring style expanding concentric metal ring, 0.060" thickness, 0.129" width, with 32 micron finish outside edge
