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 5855-01-006-1827
NSN 6620-01-611-7907
NSN 6135-01-388-1981
NSN 6150-00-572-3229
NSN 5975-00-825-6922
NSN 5990-01-517-7848
NSN 5998-01-557-9720
NSN 6320-01-338-6006
NSN 6620-01-368-2723
NSN 5920-00-721-0721
NSN 5999-01-128-5587
NSN 5855-00-951-6483