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 5960-01-386-3855
NSN 2925-00-324-9052
NSN 5990-01-094-6826
NSN 5935-01-493-7979
NSN 6150-01-187-3166
NSN 5999-01-391-2520
NSN 5990-00-930-4665
NSN 5999-01-534-6117
NSN 5855-01-528-7287
NSN 6685-00-104-7149
NSN 6220-00-827-0227
NSN 5996-01-554-2948