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 2925-01-368-5773
NSN 6610-01-023-1918
NSN 6620-01-095-8937
NSN 6150-01-130-5212
NSN 5930-01-597-6511
NSN 5935-00-430-2922
NSN 6650-00-375-6632
NSN 5965-00-653-4782
NSN 2925-01-474-3363
NSN 5855-01-505-0061
NSN 5990-01-197-6922
NSN 6130-00-502-3196