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 2925-01-597-9541
NSN 6150-00-421-6602
NSN 5975-01-191-9973
NSN 6220-01-544-5905
NSN 5920-01-357-0997
NSN 5920-01-269-1064
NSN 5998-00-961-9553
NSN 6620-01-262-4046
NSN 5998-00-222-0985
NSN 6105-01-415-3314
NSN 6620-00-891-8584
NSN 5990-01-481-5274