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 6650-01-383-4526
NSN 6650-01-572-9289
NSN 6645-01-643-7151
NSN 6110-01-232-9172
NSN 6220-01-332-6823
NSN 6650-01-015-1589
NSN 6685-00-269-6444
NSN 4140-00-707-5963
NSN 6150-00-376-8349
NSN 5945-00-845-5069
NSN 6135-01-501-5376
NSN 5855-01-559-9639