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 5999-01-237-7194
NSN 6105-00-144-1754
NSN 5998-01-170-4352
NSN 4140-01-420-6508
NSN 5950-00-233-7344
NSN 6220-01-530-4841
NSN 6645-00-932-1464
NSN 5835-01-024-9249
NSN 6150-01-594-6350
NSN 5910-01-146-5438
NSN 4140-01-610-9968
NSN 5990-01-157-0441