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 6150-01-559-3582
NSN 5915-00-583-4229
NSN 5998-01-250-3463
NSN 6650-01-300-1668
NSN 5930-00-881-0667
NSN 6220-01-512-2028
NSN 5990-00-319-0811
NSN 5925-00-679-3400
NSN 5999-01-565-1429
NSN 6220-00-090-1310
NSN 5999-01-634-0576
NSN 6610-01-380-9612