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 5905-01-632-0941
NSN 5998-01-435-3426
NSN 6105-01-093-4770
NSN 5915-00-067-7464
NSN 5835-01-502-9228
NSN 6145-01-342-1311
NSN 5910-01-542-4476
NSN 6150-01-621-1273
NSN 5920-01-194-2213
NSN 6240-01-219-3384
NSN 6145-00-104-7789
NSN 6650-01-305-4567