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 5915-00-951-0963
NSN 5910-01-004-3280
NSN 5945-00-296-8464
NSN 5990-00-419-7584
NSN 5998-01-125-1052
NSN 6130-01-311-9075
NSN 6220-01-242-2306
NSN 5990-01-065-0492
NSN 6610-01-376-9199
NSN 6320-01-272-7072
NSN 6145-01-609-3249
NSN 6645-01-022-6247