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 6620-01-454-8926
NSN 2925-01-094-4771
NSN 5920-01-502-9264
NSN 4140-01-198-5652
NSN 5910-01-270-4561
NSN 5998-00-483-3690
NSN 6240-01-011-5549
NSN 6650-00-252-2541
NSN 6645-01-270-6806
NSN 6240-00-765-9458
NSN 4140-01-496-6060
NSN 6150-01-509-2787