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 6645-00-519-1026
NSN 4140-01-580-0277
NSN 5930-00-165-8209
NSN 5910-01-315-6613
NSN 6620-01-270-4660
NSN 6130-01-429-0880
NSN 6650-00-047-9473
NSN 5985-01-073-7796
NSN 6240-01-577-0267
NSN 5999-01-458-1858
NSN 5998-00-058-5956
NSN 5835-00-396-3366