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 6685-01-498-8522
NSN 6130-01-412-0791
NSN 5990-01-558-1892
NSN 6610-01-397-4607
NSN 6220-01-550-4663
NSN 5945-00-881-3470
NSN 5945-00-549-8508
NSN 5925-00-290-4372
NSN 6320-01-228-2380
NSN 5998-01-358-8119
NSN 5975-01-502-9421
NSN 6620-01-462-5196