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 5915-01-632-3525
NSN 6650-00-707-1417
NSN 6220-00-967-8382
NSN 6645-00-163-9580
NSN 5920-01-109-3117
NSN 5915-01-566-3494
NSN 5930-01-316-2987
NSN 5960-01-223-8357
NSN 6110-01-555-4635
NSN 6610-00-773-3004
NSN 6610-00-034-3709
NSN 7035-01-045-7202