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 5835-01-595-4099
NSN 5990-00-283-1324
NSN 5915-00-762-0824
NSN 5910-00-148-9365
NSN 5910-01-453-5418
NSN 6105-01-422-0510
NSN 7035-00-455-7666
NSN 5855-01-630-4299
NSN 6650-00-473-1259
NSN 5920-00-084-0988
NSN 5945-01-453-3395
NSN 5996-00-450-2524