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 6620-00-140-8644
NSN 5965-00-568-5802
NSN 5930-01-139-4418
NSN 6645-01-221-5888
NSN 4140-01-429-7510
NSN 5998-00-356-3188
NSN 6130-01-461-2954
NSN 5895-00-496-5181
NSN 5960-00-335-3394
NSN 5999-00-240-7249
NSN 6320-00-194-4252
NSN 5920-00-300-1843