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 4140-00-057-7298
NSN 5935-00-295-6966
NSN 5835-01-257-0154
NSN 5960-00-378-1268
NSN 5835-00-529-6307
NSN 6320-01-271-0247
NSN 4140-01-139-4877
NSN 6645-01-089-6459
NSN 5975-01-529-6376
NSN 5999-01-225-5720
NSN 5999-01-391-4841
NSN 6645-01-360-0293