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 5990-01-605-4769
NSN 5930-01-383-3960
NSN 6105-01-455-1966
NSN 5960-01-233-2756
NSN 6105-01-170-2638
NSN 6105-01-530-2362
NSN 5910-00-843-2924
NSN 5965-00-522-0922
NSN 5895-00-279-8956
NSN 6610-01-242-9674
NSN 5835-01-370-4292
NSN 5915-01-423-8561