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 5960-00-512-9121
NSN 5996-01-496-3180
NSN 6610-01-027-1641
NSN 5920-01-084-9892
NSN 6105-00-527-8571
NSN 6620-00-952-4278
NSN 6610-01-213-3024
NSN 5930-01-370-4206
NSN 5935-00-294-9526
NSN 7035-01-429-0431
NSN 6645-01-621-5424
NSN 5985-00-155-5991