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 5990-01-328-9846
NSN 5999-01-391-9098
NSN 6320-01-039-5891
NSN 4140-01-469-5778
NSN 5998-01-312-7070
NSN 5985-01-634-0635
NSN 6240-00-172-5866
NSN 7035-01-271-1643
NSN 4140-01-056-2257
NSN 5999-00-661-0954
NSN 6110-00-082-0268
NSN 6610-01-255-4544