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 5965-01-500-1840
NSN 5905-01-208-5159
NSN 5930-00-721-1562
NSN 6105-01-598-7590
NSN 6220-00-350-6963
NSN 5945-01-036-5116
NSN 6130-00-942-8298
NSN 5945-01-230-4487
NSN 5910-01-236-2560
NSN 4140-01-322-8133
NSN 5960-01-125-2356
NSN 6650-00-211-6302