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 5935-01-205-7371
NSN 6145-00-845-0902
NSN 5925-01-647-2600
NSN 6610-01-633-4179
NSN 6220-00-863-0134
NSN 5998-00-977-0641
NSN 6650-00-187-5388
NSN 5835-01-161-7461
NSN 6150-01-406-2070
NSN 5910-00-780-0977
NSN 5975-01-272-3205
NSN 6645-00-269-8440