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 6620-01-547-7758
NSN 7035-01-327-4456
NSN 5915-00-074-3260
NSN 5910-01-398-5136
NSN 5945-01-634-0588
NSN 6110-01-578-7766
NSN 5855-01-308-0955
NSN 5930-00-145-9780
NSN 5960-01-462-1864
NSN 6150-00-360-9348
NSN 5990-01-474-3477
NSN 6110-01-646-0840