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 5950-01-122-3302
NSN 5998-01-571-0146
NSN 5990-01-303-6110
NSN 6150-01-148-7105
NSN 5960-01-234-9107
NSN 6685-00-417-6239
NSN 6145-00-931-2270
NSN 5945-00-057-5879
NSN 5835-00-681-0005
NSN 6320-00-098-2858
NSN 7035-01-278-1379
NSN 5915-01-194-9871