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 6650-01-255-1643
NSN 5998-01-388-2753
NSN 4140-01-257-6571
NSN 5920-01-242-6786
NSN 2925-01-631-7004
NSN 6220-00-594-8817
NSN 6220-00-607-5961
NSN 4140-01-146-4474
NSN 6145-01-195-0332
NSN 6645-01-643-5845
NSN 6130-01-465-0083
NSN 5998-00-917-7529