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 6145-00-212-0422
NSN 5999-01-534-8101
NSN 7035-01-502-9967
NSN 6645-01-247-4549
NSN 6650-01-079-9838
NSN 5855-01-069-4126
NSN 6110-01-504-9922
NSN 5990-01-100-7231
NSN 6130-00-528-7838
NSN 6320-00-456-0836
NSN 6220-00-992-3799
NSN 6145-01-510-1682