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 5960-00-611-7175
NSN 7035-00-059-7970
NSN 5930-01-255-6166
NSN 5960-01-124-8336
NSN 6150-01-261-7945
NSN 5990-00-946-3513
NSN 6240-01-258-5829
NSN 5835-00-187-1481
NSN 6220-01-077-7833
NSN 5950-01-398-9094
NSN 5975-01-626-8373
NSN 6145-00-493-4073