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 5990-01-136-4068
NSN 6135-00-756-6149
NSN 5965-01-425-1347
NSN 6105-00-364-6554
NSN 5996-01-563-8998
NSN 6650-00-937-5319
NSN 6620-00-831-2737
NSN 5999-01-140-5752
NSN 7035-00-803-3056
NSN 5999-00-147-9978
NSN 6220-01-257-1075
NSN 5950-00-982-4917