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 5910-01-232-0497
NSN 5950-01-454-4327
NSN 5965-00-529-0602
NSN 5950-00-425-8289
NSN 6135-00-891-4944
NSN 4140-01-646-1182
NSN 7035-00-541-8516
NSN 6650-01-354-5917
NSN 6135-00-583-3966
NSN 5895-00-892-1107
NSN 6320-00-115-0883
NSN 5895-00-353-6671