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 6145-01-220-2309
NSN 5990-01-114-5095
NSN 6145-01-318-4774
NSN 5835-01-303-6563
NSN 6110-00-070-7086
NSN 5915-01-306-7320
NSN 5975-01-366-2298
NSN 5895-00-934-9047
NSN 6130-01-554-9883
NSN 5945-01-607-5253
NSN 5975-01-453-0506
NSN 5930-01-634-0659