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 5935-01-245-9373
NSN 6620-00-901-7848
NSN 5990-01-538-0923
NSN 5935-01-565-9787
NSN 6620-01-319-2667
NSN 5960-01-240-3266
NSN 5910-01-444-1429
NSN 6620-01-245-0184
NSN 6650-00-172-7519
NSN 7035-01-444-4240
NSN 5965-00-227-7348
NSN 5985-01-400-0876