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 5945-01-043-4939
NSN 5930-00-203-4430
NSN 6150-01-060-5112
NSN 7035-01-305-1950
NSN 5925-01-384-3402
NSN 6220-01-084-0287
NSN 6220-00-155-4524
NSN 6145-00-502-1828
NSN 6620-01-515-9597
NSN 6220-01-631-4422
NSN 5945-01-590-8739
NSN 6620-01-552-2889