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 6685-01-564-5962
NSN 5985-00-840-4234
NSN 5945-00-251-1408
NSN 6650-01-485-8536
NSN 6105-00-263-0119
NSN 5895-01-205-2047
NSN 5930-01-481-3851
NSN 5999-01-331-2613
NSN 6150-00-171-9455
NSN 6135-00-973-5632
NSN 5905-00-457-0476
NSN 6650-01-546-2378