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 5930-00-181-5885
NSN 6130-00-878-8376
NSN 5935-00-476-6837
NSN 5905-01-630-2495
NSN 5960-01-273-0942
NSN 5999-01-303-1431
NSN 4140-00-320-1482
NSN 7035-01-574-6324
NSN 5945-01-447-3456
NSN 5990-00-674-2318
NSN 5915-00-439-4477
NSN 5945-00-284-7312