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 5960-01-142-1995
NSN 6135-00-145-8884
NSN 5945-01-602-4106
NSN 5895-01-473-8496
NSN 6145-00-090-5411
NSN 5965-00-444-0621
NSN 5975-01-481-9842
NSN 5965-01-359-8172
NSN 5950-01-227-9932
NSN 6240-01-469-2957
NSN 6110-01-222-0767
NSN 5930-01-230-3820