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 6240-01-125-6901
NSN 6150-01-605-2711
NSN 5855-01-145-4903
NSN 5915-00-929-3982
NSN 6320-00-676-9387
NSN 5930-00-674-2133
NSN 5975-01-169-0945
NSN 6240-01-242-9138
NSN 5999-00-371-1720
NSN 5950-00-605-1925
NSN 5950-01-413-4317
NSN 5930-01-210-4312