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 5945-01-355-5385
NSN 5855-01-325-9507
NSN 6145-00-058-8564
NSN 4140-01-209-4215
NSN 5975-00-726-8370
NSN 6620-01-610-5081
NSN 5985-00-466-1574
NSN 4140-01-248-0157
NSN 4140-01-654-3021
NSN 6105-00-925-9906
NSN 5855-01-387-1928
NSN 6105-00-262-2224