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 5999-01-646-1858
NSN 4140-01-644-9439
NSN 5895-00-707-6663
NSN 5945-01-350-0053
NSN 5905-00-534-2576
NSN 6110-00-660-8998
NSN 5930-01-299-1785
NSN 5910-01-102-3235
NSN 5915-00-985-1405
NSN 6220-01-412-0687
NSN 5915-00-368-4564
NSN 5835-01-132-5894