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 6145-00-968-6603
NSN 6650-00-490-2637
NSN 5895-01-394-5343
NSN 6620-01-504-0997
NSN 5998-01-172-8610
NSN 6320-01-350-5570
NSN 4140-01-310-0741
NSN 6220-01-123-8878
NSN 5910-00-702-9790
NSN 6130-00-695-9046
NSN 5985-01-183-1846
NSN 5925-01-292-6570