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 6220-01-133-5941
NSN 6135-00-175-7132
NSN 5960-00-300-2358
NSN 4140-01-084-9429
NSN 6610-01-259-1718
NSN 5965-01-090-3573
NSN 5945-01-084-0850
NSN 6150-01-539-0096
NSN 6320-01-240-4637
NSN 6130-00-834-6625
NSN 5990-01-392-5682
NSN 7035-01-198-1512