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 6145-01-048-2750
NSN 6650-01-379-6968
NSN 6240-01-437-6888
NSN 5920-01-616-8965
NSN 5915-00-417-3834
NSN 5996-01-131-0006
NSN 6240-01-344-4803
NSN 6220-01-393-0908
NSN 6220-00-987-1694
NSN 6685-01-583-8405
NSN 5998-01-050-7257
NSN 5999-01-562-0770