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 5999-01-423-1030
NSN 6150-01-208-2238
NSN 6610-01-154-5493
NSN 5905-01-529-3041
NSN 6620-00-933-3640
NSN 5910-01-035-1888
NSN 6645-01-476-8013
NSN 4140-01-634-0330
NSN 6610-00-972-0869
NSN 6240-01-545-2990
NSN 6105-01-507-7754
NSN 6610-00-934-1044