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 6110-01-226-6568
NSN 5910-01-311-8552
NSN 5920-00-823-0969
NSN 5965-01-482-3119
NSN 5855-01-385-8846
NSN 5925-01-646-2363
NSN 5990-01-633-9503
NSN 5925-01-442-8589
NSN 5855-01-203-4719
NSN 5950-01-526-6958
NSN 6220-00-493-9641
NSN 5915-01-550-7308