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 5990-01-227-6526
NSN 6620-01-278-8028
NSN 5835-01-576-9013
NSN 6240-01-168-4533
NSN 6135-01-196-7399
NSN 5910-01-074-4840
NSN 5935-01-497-0056
NSN 5960-01-367-6153
NSN 5855-01-579-9859
NSN 6610-01-409-1781
NSN 5990-00-936-7299
NSN 5905-01-436-2453