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 6110-01-409-1413
NSN 5935-01-361-4199
NSN 6220-01-607-0130
NSN 6110-00-833-9566
NSN 5855-01-436-7621
NSN 6150-01-307-9064
NSN 6105-01-580-5072
NSN 6150-00-432-1351
NSN 5996-01-262-8953
NSN 5895-00-114-1544
NSN 6620-01-514-2949
NSN 6645-01-086-7668