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 6105-01-297-1040
NSN 5920-01-019-8880
NSN 5975-00-138-4859
NSN 5990-00-841-5637
NSN 5945-00-475-1478
NSN 6320-00-089-9426
NSN 6220-01-471-2930
NSN 5996-00-682-3841
NSN 5999-00-281-3900
NSN 5996-01-493-7962
NSN 6130-00-153-3136
NSN 5930-01-053-8661