A circular shaped item with an aperture manufactured to predetermined dimensions and designed for use as a seal in stuffing boxes, packing nuts, and the like. It may be (1) any nonmetallic molded or formed ring (except solid (without joint) rings having a square or rectangular cross section); or (2) any shredded metal or metal foil type metallic or semimetallic rings. Excludes felt items but includes multimaterial items in which one of the materials is felt. For solid (without joints) nonmetallic items with a square or rectangular cross section, see washer (as modified) and gasket. For rubber items specifically designed for weather-proofing doors, windows, chests, and the like see seal, nonmetallic angle; seal, nonmetallic channel; and seal, nonmetallic, special shaped section. For circular (with aperature) nonmetallic items with a solid round cross-section see o-ring. Excludes cup, compression; gasket; washer (as modified); and felt, mechanical, preformed.
Classification: Parts of armored fighting vehicles,motorized, whether or not fitted with weapons
NSN 5975-00-845-9453
NSN 5985-00-644-9008
NSN 5965-00-199-4456
NSN 5999-01-188-0230
NSN 5920-01-032-5002
NSN 5935-01-417-1004
NSN 6320-00-313-9114
NSN 6645-01-548-3934
NSN 5950-00-884-0207
NSN 5996-00-578-9092
NSN 6105-00-423-7963
NSN 6220-00-437-2737