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 6220-01-417-3421
NSN 5835-01-442-6482
NSN 5965-01-512-1985
NSN 5925-01-113-0663
NSN 6130-01-050-3208
NSN 6240-01-341-4893
NSN 6145-01-587-7689
NSN 6105-00-257-2505
NSN 5960-00-636-4834
NSN 6150-01-594-6350
NSN 5930-00-478-7827
NSN 5925-01-326-0941