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 6110-01-474-4280
NSN 5905-00-338-9621
NSN 5930-01-400-6126
NSN 5975-01-476-0906
NSN 6650-01-282-5805
NSN 6650-01-343-8008
NSN 7035-00-803-3056
NSN 5998-01-398-0538
NSN 6650-00-764-2121
NSN 6320-01-108-5933
NSN 5999-00-618-1040
NSN 6320-01-564-0893