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 6220-01-056-4874
NSN 5945-00-615-9218
NSN 4140-00-073-9167
NSN 5950-00-815-4640
NSN 6220-01-047-4060
NSN 6105-01-651-6533
NSN 5999-01-534-6696
NSN 6320-01-540-4885
NSN 6685-01-201-4178
NSN 6105-00-275-0826
NSN 2925-00-432-3410
NSN 5950-01-188-4866