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 6130-01-176-0423
NSN 6645-01-369-4371
NSN 5996-01-395-6608
NSN 6610-00-836-7397
NSN 5895-01-259-8359
NSN 5905-01-509-4571
NSN 5965-01-408-5990
NSN 5920-00-959-5664
NSN 6620-00-470-3219
NSN 6685-01-048-4682
NSN 5935-00-708-6762
NSN 5910-00-255-6228