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 6145-01-532-1459
NSN 4140-00-036-6447
NSN 5925-01-100-0970
NSN 6650-01-477-9545
NSN 5945-01-551-0654
NSN 5975-01-371-9783
NSN 5960-00-442-9455
NSN 5895-00-043-1155
NSN 6645-01-415-2296
NSN 5895-00-084-3046
NSN 5835-00-933-9609
NSN 5935-01-099-7296