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 5975-00-603-5731
NSN 5915-01-112-2937
NSN 6650-01-019-3441
NSN 6220-01-209-0832
NSN 7035-01-006-0895
NSN 6650-00-610-3956
NSN 5905-00-179-1086
NSN 5855-01-532-4453
NSN 5965-01-077-2124
NSN 6240-01-481-1796
NSN 5999-00-871-7549
NSN 5998-01-037-5441