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 6135-01-529-0122
NSN 6645-00-596-5388
NSN 5945-01-606-1631
NSN 5910-01-585-1701
NSN 6650-00-419-4863
NSN 5910-01-224-4524
NSN 5998-01-423-8525
NSN 5990-00-326-2172
NSN 6220-01-611-7723
NSN 6320-01-578-6006
NSN 5835-01-115-1543
NSN 6110-01-633-9660