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 5985-01-502-8852
NSN 2925-01-461-6372
NSN 4140-00-643-0115
NSN 6620-00-229-2728
NSN 6220-01-246-6466
NSN 4140-01-474-5701
NSN 6150-00-518-1402
NSN 2925-00-149-0760
NSN 5965-01-191-0735
NSN 6150-01-393-0621
NSN 5855-01-461-0690
NSN 5855-01-234-3376