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 4140-01-542-8516
NSN 6105-01-628-8587
NSN 5975-01-003-9803
NSN 6645-01-423-9361
NSN 5998-01-224-2489
NSN 5998-01-228-3133
NSN 5965-01-654-7451
NSN 5910-01-036-9780
NSN 5965-00-529-0602
NSN 5910-00-240-8328
NSN 5998-01-421-2360
NSN 4140-01-443-8026