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 6220-01-564-7897
NSN 6130-01-021-3078
NSN 6240-01-144-2379
NSN 5935-00-196-2293
NSN 6610-00-350-1091
NSN 6145-01-143-2515
NSN 6105-01-473-9063
NSN 5965-00-267-4173
NSN 5998-01-255-8222
NSN 5945-00-476-1401
NSN 6685-01-045-5002
NSN 5998-00-633-5169