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 6650-01-442-7893
NSN 5925-00-144-0482
NSN 6240-01-030-1183
NSN 6135-01-264-1311
NSN 5915-01-266-4320
NSN 6110-00-004-8883
NSN 5910-01-287-6196
NSN 6105-01-353-4981
NSN 5920-00-910-4531
NSN 4140-01-533-8424
NSN 6105-01-532-3633
NSN 5925-01-154-4189