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 5905-01-556-9578
NSN 4140-00-189-0235
NSN 5998-01-471-2515
NSN 5930-01-128-3238
NSN 5905-01-398-0605
NSN 6610-01-363-9745
NSN 5855-01-417-3250
NSN 6150-00-542-8668
NSN 5990-00-629-2794
NSN 6650-01-241-1269
NSN 5930-01-010-4553
NSN 6610-01-217-4162