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 5930-00-278-7731
NSN 5999-01-340-8504
NSN 5930-00-445-3664
NSN 7035-00-252-7467
NSN 5950-00-003-7679
NSN 5990-01-561-7802
NSN 6135-01-469-7574
NSN 5975-00-282-2707
NSN 5855-01-308-0955
NSN 6650-01-055-8146
NSN 5910-00-397-1849
NSN 5920-01-447-0805