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 6220-00-292-6775
NSN 5905-01-027-1344
NSN 5990-00-989-4080
NSN 5835-01-351-3425
NSN 5960-01-258-5615
NSN 5835-01-616-6131
NSN 7035-00-548-4098
NSN 4140-01-398-9118
NSN 6130-01-204-9012
NSN 5915-01-215-5942
NSN 5915-01-649-5064
NSN 6320-01-046-5228