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 5835-01-290-4397
NSN 5835-00-484-1330
NSN 4140-01-218-4999
NSN 5855-01-634-0259
NSN 6135-00-840-6451
NSN 6105-01-291-4860
NSN 5925-01-012-1890
NSN 7035-01-201-7152
NSN 6135-01-437-6409
NSN 5935-01-410-8490
NSN 5998-01-145-5199
NSN 6650-00-175-7520