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 5975-01-393-9731
NSN 6220-01-466-7573
NSN 6685-01-262-8663
NSN 5990-01-272-4091
NSN 6320-00-116-3658
NSN 6105-01-509-6049
NSN 6220-01-037-6558
NSN 4140-01-383-8170
NSN 6105-01-649-3569
NSN 5965-01-367-6483
NSN 6145-01-646-1232
NSN 6320-01-366-5157