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 5920-01-490-0904
NSN 6220-01-500-7388
NSN 5855-01-125-9167
NSN 5915-01-525-6504
NSN 5930-01-121-4133
NSN 2925-00-636-4026
NSN 6130-01-558-5343
NSN 6220-01-521-5703
NSN 6650-01-472-3955
NSN 5920-01-201-2252
NSN 6220-01-292-0980
NSN 7035-00-763-6180