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 6320-00-228-5678
NSN 4140-00-707-5963
NSN 5920-01-495-1268
NSN 5965-01-424-7417
NSN 5960-01-314-1822
NSN 6130-01-104-3424
NSN 5960-01-168-1063
NSN 6685-01-529-6504
NSN 5990-00-845-2864
NSN 5999-00-542-9920
NSN 5998-00-371-1943
NSN 5950-00-264-1146