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 6105-01-381-1088
NSN 6620-01-152-0936
NSN 5998-01-192-7721
NSN 4140-01-562-9946
NSN 6130-01-045-1519
NSN 5895-01-254-8785
NSN 5950-01-177-7107
NSN 5999-01-507-9308
NSN 6150-00-460-9510
NSN 5945-01-533-6153
NSN 4140-00-232-1039
NSN 6610-00-909-6218