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 5930-01-031-4232
NSN 5996-00-264-8929
NSN 6135-01-252-0315
NSN 5935-00-472-6038
NSN 5910-01-040-7970
NSN 6135-00-577-8429
NSN 5950-01-433-2289
NSN 5990-00-623-8127
NSN 5999-00-446-9111
NSN 6105-00-427-8473
NSN 6320-00-886-9771
NSN 6645-01-633-1852