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 6645-00-072-1909
NSN 5935-01-429-9941
NSN 5895-00-525-3295
NSN 5950-01-044-9700
NSN 5920-00-468-3074
NSN 6105-01-535-7024
NSN 5990-01-160-6978
NSN 5920-01-597-0121
NSN 6645-01-314-2889
NSN 6135-01-125-4867
NSN 5960-01-090-5683
NSN 6130-01-470-9402