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 6645-00-904-2754
NSN 5950-00-914-3030
NSN 5975-01-365-9127
NSN 6220-00-083-6848
NSN 6650-01-141-4817
NSN 5925-01-651-9168
NSN 5915-01-291-3525
NSN 5930-01-578-5505
NSN 5960-00-518-4704
NSN 5965-01-447-2992
NSN 5975-01-494-2374
NSN 5945-01-228-1762