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 5999-01-423-0621
NSN 6645-01-372-9464
NSN 6110-01-076-4060
NSN 5835-00-155-1379
NSN 6320-00-557-3079
NSN 5835-01-424-0054
NSN 6110-01-030-8283
NSN 2925-00-987-9595
NSN 5998-01-339-2300
NSN 6150-01-386-4351
NSN 6130-01-339-5504
NSN 5999-00-775-7615