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 5910-01-547-6581
NSN 5920-00-427-7267
NSN 5910-01-355-6284
NSN 6320-01-123-6814
NSN 5910-00-859-8320
NSN 6135-00-422-3967
NSN 5855-01-634-0259
NSN 5895-00-752-6171
NSN 2925-01-077-6867
NSN 6220-00-284-3220
NSN 5935-01-183-7965
NSN 2925-01-607-4340