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 6645-01-540-0231
NSN 7035-00-541-8516
NSN 4140-01-202-7853
NSN 5998-01-602-0942
NSN 6105-01-017-2748
NSN 6610-01-009-1406
NSN 6130-01-417-7589
NSN 6130-00-381-1927
NSN 6110-01-158-0295
NSN 6645-01-456-5011
NSN 6645-00-900-5830
NSN 6145-00-427-7201