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 6240-00-818-1364
NSN 5960-01-573-6483
NSN 5996-01-372-8174
NSN 5910-00-962-0531
NSN 5960-01-597-9591
NSN 6620-01-383-7519
NSN 2925-00-659-2058
NSN 5895-01-083-4358
NSN 5895-00-542-2019
NSN 6105-00-905-8403
NSN 7035-01-332-2304
NSN 5920-00-910-0315