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 5950-00-265-5662
NSN 5915-01-612-1871
NSN 7035-01-344-8708
NSN 5935-01-249-0323
NSN 5920-01-583-9736
NSN 6610-00-935-7131
NSN 6645-00-634-9317
NSN 5975-00-483-1108
NSN 6620-00-602-0636
NSN 4140-01-268-1940
NSN 5990-01-421-5342
NSN 6645-00-050-3738