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 5998-00-539-3761
NSN 6240-00-583-9863
NSN 6150-00-058-8669
NSN 6145-01-272-7558
NSN 6220-01-219-9670
NSN 7035-01-150-6303
NSN 6220-01-461-5936
NSN 2925-01-334-7122
NSN 5996-00-736-3968
NSN 6145-01-441-2630
NSN 6220-01-255-0258
NSN 6620-01-320-7656