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 6105-01-287-9756
NSN 5999-00-196-7369
NSN 6145-01-028-3803
NSN 6620-01-025-3401
NSN 6130-01-398-8997
NSN 6150-01-397-2579
NSN 6220-00-583-9889
NSN 6130-00-514-1177
NSN 6620-00-924-4369
NSN 7035-01-462-5766
NSN 5965-01-502-3650
NSN 6650-01-521-7187