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 6105-00-349-7561
NSN 5905-01-442-7682
NSN 5905-01-403-2806
NSN 5990-00-125-5036
NSN 5998-01-120-1176
NSN 5996-01-044-6958
NSN 6240-01-650-5348
NSN 5910-00-845-4173
NSN 6645-01-221-9424
NSN 6620-01-328-1455
NSN 5999-01-025-4518
NSN 6645-01-395-2989