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 5920-01-652-6649
NSN 6645-00-021-6408
NSN 5990-00-613-2279
NSN 7035-01-422-4642
NSN 5998-00-944-0720
NSN 5945-01-311-7354
NSN 5990-01-378-7349
NSN 6220-00-919-8172
NSN 5999-00-264-3445
NSN 5999-01-423-3662
NSN 6110-00-663-4054
NSN 6240-00-710-2742