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 6145-01-473-9503
NSN 5975-01-580-0569
NSN 6620-01-058-2411
NSN 5950-00-407-5025
NSN 5950-00-930-7436
NSN 6240-00-082-1142
NSN 5960-00-842-6661
NSN 6145-00-705-6686
NSN 5950-01-037-8270
NSN 6610-01-534-9765
NSN 6105-00-225-8745
NSN 5920-01-634-0250