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 5965-00-988-6854
NSN 5915-00-186-9346
NSN 5998-01-138-4293
NSN 5996-00-518-0460
NSN 6610-00-269-4506
NSN 7035-01-607-5834
NSN 6220-00-269-3783
NSN 5935-00-271-7526
NSN 4140-01-364-9797
NSN 6145-01-371-0648
NSN 6650-00-504-8238
NSN 7035-00-347-5537