A circular, single or multipiece item, metallic or nonmetallic in composition, designed to be fitted in a circumferential groove in a piston and to spring outward against the cylinder wall to function as a seal or wiper. It is supplied in various cross-sectional shapes and is cut through at one point to allow for installation in the piston ring groove. It may include an expander. Excludes packing, preformed; retainer, oil seal; retainer, packing; ring, retaining; ring wiper; and seal ring, metal.
Classification: Other parts of airplanes or helicopters for use in military aircraft (excludes propellers, rotors, undercarriages, and parts thereof)
NSN 6220-01-262-9167
NSN 5910-00-085-3123
NSN 5965-01-450-6699
NSN 6610-00-408-4775
NSN 5950-01-611-8484
NSN 4140-01-166-0028
NSN 5965-01-142-7862
NSN 5999-01-611-8016
NSN 5905-01-162-8253
NSN 6150-00-596-9882
NSN 2925-01-539-9795
NSN 6685-00-578-0974