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 6610-00-163-9559
NSN 5835-00-269-2232
NSN 5935-00-611-5588
NSN 6240-01-106-2447
NSN 7035-00-946-2642
NSN 6220-01-058-5048
NSN 5950-01-397-9885
NSN 5915-00-528-7992
NSN 5998-01-075-1315
NSN 5998-00-832-0814
NSN 5999-00-628-7858
NSN 5935-00-835-4999