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 6620-01-444-4048
NSN 5910-00-816-7505
NSN 5965-01-473-0825
NSN 5985-01-498-4610
NSN 7035-01-166-2473
NSN 6130-00-196-5292
NSN 5835-00-217-2147
NSN 2925-00-513-6644
NSN 6610-01-445-4304
NSN 4140-01-488-5980
NSN 6135-01-205-5965
NSN 5930-00-838-1716