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 6645-00-544-8529
NSN 5975-00-269-4365
NSN 5960-00-905-8020
NSN 5975-01-235-3094
NSN 6645-01-573-7603
NSN 4140-00-465-7668
NSN 5998-00-116-8459
NSN 5950-01-540-3561
NSN 5895-01-221-0591
NSN 5920-00-518-1496
NSN 6650-01-244-9847
NSN 6685-01-100-1071