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 6135-01-574-2040
NSN 5935-01-142-9941
NSN 5998-01-062-0086
NSN 5965-00-823-8623
NSN 5895-01-367-2079
NSN 5985-01-251-8088
NSN 5910-01-530-1314
NSN 4140-00-218-0804
NSN 5855-00-832-9341
NSN 5855-00-185-1560
NSN 6645-01-337-1806
NSN 2925-01-347-4208