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 5990-00-473-1809
NSN 5920-01-170-3464
NSN 6620-01-350-5103
NSN 5855-01-116-8905
NSN 5990-00-797-7649
NSN 5930-00-187-3735
NSN 5975-01-388-4264
NSN 5920-01-603-9341
NSN 5930-00-122-7808
NSN 5975-01-449-1411
NSN 6220-01-161-2836
NSN 5930-01-097-7521