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 5999-01-552-1480
NSN 5930-01-463-3585
NSN 6650-01-537-7795
NSN 5935-00-755-3520
NSN 7035-00-079-7189
NSN 6150-01-175-4041
NSN 5960-00-199-6034
NSN 6220-00-181-4643
NSN 6105-00-285-2774
NSN 5990-01-031-7599
NSN 5935-01-039-7594
NSN 6650-01-499-4381