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 6620-01-254-3609
NSN 5945-00-189-1302
NSN 5895-01-499-1760
NSN 5950-00-908-4251
NSN 5935-01-647-6742
NSN 5930-01-012-1939
NSN 5935-01-596-5045
NSN 6150-01-351-5455
NSN 5935-01-592-2503
NSN 6320-00-194-4252
NSN 5990-01-395-4194
NSN 6645-00-200-2322