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 6220-01-406-5891
NSN 5915-01-167-8506
NSN 5950-00-972-1312
NSN 5855-00-782-7714
NSN 5998-00-982-4213
NSN 5960-00-935-6484
NSN 6240-00-226-3130
NSN 5950-01-645-4986
NSN 6220-01-588-8829
NSN 5855-01-610-6125
NSN 5920-01-374-2093
NSN 6620-01-401-5356