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 5910-00-388-6737
NSN 6145-01-538-5445
NSN 6130-00-503-2622
NSN 5999-01-537-1665
NSN 7035-00-152-0055
NSN 6220-00-334-7008
NSN 6105-01-182-0436
NSN 5895-01-012-0930
NSN 6650-00-775-6560
NSN 6150-01-298-9011
NSN 5895-00-700-4622
NSN 5950-01-319-2406