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 5905-01-363-2056
NSN 5905-01-392-2291
NSN 6150-01-211-4755
NSN 6110-01-268-7140
NSN 6620-00-371-7109
NSN 5915-00-417-3834
NSN 7035-01-028-4966
NSN 6135-00-635-9187
NSN 5960-00-165-1015
NSN 7035-01-471-4884
NSN 6150-00-393-0498
NSN 6220-01-504-5517