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 5985-00-144-8170
NSN 6105-01-248-3514
NSN 6610-00-903-0714
NSN 5920-01-642-2426
NSN 6150-01-463-8872
NSN 6620-01-212-4298
NSN 6105-01-554-7274
NSN 6135-00-850-3177
NSN 6610-00-371-1897
NSN 6105-01-468-5605
NSN 5910-01-237-1701
NSN 5835-01-170-5537