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: Gaskets,washers & other seals
NSN 5920-01-051-8086
NSN 5975-01-296-1140
NSN 6145-01-363-4523
NSN 5835-00-967-0998
NSN 6620-00-466-2314
NSN 5945-00-174-0810
NSN 5985-01-624-5906
NSN 4140-01-172-2331
NSN 5998-01-094-8614
NSN 5935-01-365-3460
NSN 5895-01-594-3027
NSN 5910-00-171-3414