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 5985-01-049-9895
NSN 5985-01-649-4836
NSN 5835-01-515-6537
NSN 6320-01-457-2805
NSN 5910-00-471-2310
NSN 5910-01-434-5732
NSN 6620-01-611-2038
NSN 5975-00-937-2378
NSN 5930-00-452-0439
NSN 6320-01-246-4390
NSN 5996-00-003-3559
NSN 6130-01-029-4250