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 6150-01-585-4629
NSN 6110-01-421-4449
NSN 5965-01-306-6527
NSN 5945-01-618-2043
NSN 6645-00-908-0140
NSN 5910-00-232-8916
NSN 5855-01-361-2362
NSN 5975-01-411-3684
NSN 6650-01-035-1284
NSN 5915-01-181-5603
NSN 5915-00-437-6694
NSN 6650-00-842-5463