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 6650-01-068-7720
NSN 6220-01-245-8112
NSN 6130-01-063-9664
NSN 5998-00-981-0961
NSN 5930-01-234-9987
NSN 6220-01-210-5401
NSN 6130-01-512-7068
NSN 5925-01-632-1897
NSN 5835-00-170-5238
NSN 2925-01-285-7163
NSN 5925-01-118-2484
NSN 2925-01-131-8761