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 5998-01-495-9598
NSN 6645-01-007-9192
NSN 2925-01-312-9502
NSN 5960-01-546-2379
NSN 7035-00-020-2227
NSN 4140-01-142-3192
NSN 5975-01-132-6430
NSN 5895-01-039-9474
NSN 5895-01-235-8444
NSN 5925-01-097-9960
NSN 6145-01-191-1529
NSN 6610-00-247-1308