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 6620-01-034-4539
NSN 6150-01-076-8567
NSN 5920-01-118-9492
NSN 6240-01-534-2987
NSN 6240-00-432-0328
NSN 6650-00-436-1526
NSN 5935-00-968-7651
NSN 6135-00-182-7008
NSN 7035-01-151-0265
NSN 6610-00-161-0680
NSN 6130-00-332-9359
NSN 6145-00-805-3354