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 6105-01-225-3732
NSN 5930-00-432-9139
NSN 5975-01-041-2429
NSN 5998-00-753-8891
NSN 5910-00-468-6300
NSN 5930-00-263-0749
NSN 5990-01-485-0260
NSN 5915-01-513-9122
NSN 6135-01-247-5660
NSN 6645-01-058-8877
NSN 5855-00-904-9572
NSN 5960-01-064-7121