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 5960-01-212-4227
NSN 2925-00-233-5644
NSN 5975-01-220-9360
NSN 5930-01-651-3584
NSN 5960-01-041-7449
NSN 5855-01-369-4192
NSN 6145-00-598-9397
NSN 5975-01-223-6324
NSN 4140-01-567-5044
NSN 5935-00-923-1391
NSN 6220-00-682-8292
NSN 5960-00-740-7285