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 6620-01-483-1138
NSN 6685-00-945-4979
NSN 5910-01-251-9148
NSN 5965-01-336-5107
NSN 5990-00-944-0166
NSN 5915-00-597-2369
NSN 5905-00-615-9391
NSN 5965-01-344-8592
NSN 6150-00-549-7234
NSN 4140-00-800-0317
NSN 7035-01-491-3981
NSN 5905-01-453-2329