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 6610-01-125-9899
NSN 5975-01-460-2326
NSN 6150-00-223-5840
NSN 6145-01-181-4142
NSN 6610-01-641-7834
NSN 7035-01-113-1424
NSN 4140-00-296-9695
NSN 6620-01-125-0794
NSN 5920-01-440-7365
NSN 5920-01-658-8794
NSN 5960-00-241-2737
NSN 5920-01-181-8210