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 6320-00-731-6134
NSN 5998-01-416-7570
NSN 6150-01-079-2129
NSN 6135-00-078-9931
NSN 5835-01-541-9991
NSN 2925-01-535-3167
NSN 5960-01-137-9316
NSN 5996-00-900-4001
NSN 5990-00-538-7962
NSN 5985-00-874-2162
NSN 5965-01-058-1076
NSN 5945-00-645-2309