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 5965-01-453-4403
NSN 6105-01-450-6439
NSN 6320-00-905-0543
NSN 6320-01-225-0178
NSN 5985-01-268-8430
NSN 5998-00-271-1555
NSN 5895-00-248-7477
NSN 6685-01-434-1148
NSN 5895-00-587-7406
NSN 5965-00-241-6424
NSN 6650-01-411-6292
NSN 6150-00-170-6572