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 5895-01-563-9932
NSN 2925-00-127-7828
NSN 6610-00-007-1030
NSN 6610-01-227-7221
NSN 6110-01-194-6006
NSN 6220-01-336-2694
NSN 5945-01-161-0726
NSN 5855-01-191-3404
NSN 5895-00-244-0943
NSN 4140-01-230-1082
NSN 5950-01-233-5882
NSN 5945-01-381-1356