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 6320-00-790-4844
NSN 6135-01-168-2944
NSN 6610-01-104-6981
NSN 6610-01-420-7817
NSN 5855-01-364-1005
NSN 6135-01-620-8216
NSN 6105-01-561-6445
NSN 6220-01-429-1294
NSN 5945-01-019-1910
NSN 5965-01-323-8134
NSN 4140-01-280-3872
NSN 6130-01-512-7068