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 6320-01-240-4637
NSN 6150-00-057-2434
NSN 5915-01-453-7590
NSN 5855-00-532-0025
NSN 5996-00-754-2840
NSN 6130-00-984-6252
NSN 5905-01-424-9749
NSN 6135-00-557-8874
NSN 5996-00-218-1123
NSN 4140-00-555-3856
NSN 6110-01-449-2685
NSN 5895-00-269-3848