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 6650-00-518-5194
NSN 5960-00-884-2535
NSN 5999-01-568-5082
NSN 2925-00-149-0760
NSN 4140-00-409-8298
NSN 6110-00-252-2113
NSN 5990-00-099-0822
NSN 6240-00-518-3541
NSN 5835-00-936-8753
NSN 5975-01-207-0508
NSN 5990-00-893-8998
NSN 5905-01-157-9933