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 6150-00-518-1402
NSN 5935-00-359-9169
NSN 6240-00-527-8614
NSN 6150-01-293-8493
NSN 6320-00-160-0899
NSN 5905-01-552-5038
NSN 5975-01-214-4577
NSN 5920-00-341-6340
NSN 5998-00-709-0613
NSN 6620-01-589-5411
NSN 6645-00-269-8440
NSN 5999-00-711-1745