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 5855-01-416-4503
NSN 5960-01-449-1310
NSN 6620-00-232-2048
NSN 5975-00-167-6509
NSN 6620-00-130-0815
NSN 6135-00-112-8637
NSN 6130-00-155-4589
NSN 4140-00-453-5753
NSN 6620-01-416-1757
NSN 5895-01-411-1890
NSN 6620-00-613-3023
NSN 5965-00-529-0602