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 6145-01-229-4136
NSN 4140-01-182-7756
NSN 6620-01-606-8964
NSN 5935-01-295-3383
NSN 5935-00-969-9766
NSN 5990-01-188-7309
NSN 5835-01-501-0526
NSN 6320-01-181-9474
NSN 6105-01-395-8532
NSN 6135-01-502-3807
NSN 5935-01-438-3751
NSN 2925-00-295-8109