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 5935-01-296-6773
NSN 6145-00-464-0979
NSN 5930-00-714-9297
NSN 6150-01-454-0029
NSN 6620-01-350-5103
NSN 6320-01-607-1491
NSN 5905-01-476-1065
NSN 5905-01-536-8512
NSN 6620-01-359-3920
NSN 5998-01-533-4433
NSN 5945-01-370-6881
NSN 6650-00-207-9639