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 5990-00-948-1469
NSN 5999-00-081-5567
NSN 5910-00-248-6899
NSN 6320-01-393-7022
NSN 5905-00-119-3143
NSN 6110-01-131-4001
NSN 4140-00-189-0235
NSN 5996-00-487-5777
NSN 5960-00-661-0477
NSN 6135-01-354-5535
NSN 6650-00-569-1762
NSN 5960-00-828-6502