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 4140-01-115-5163
NSN 5999-01-349-7036
NSN 4140-01-457-5539
NSN 6135-01-351-2690
NSN 5990-01-579-2711
NSN 5895-01-448-7196
NSN 6610-01-413-3912
NSN 5930-00-381-9922
NSN 5965-01-007-1963
NSN 6240-01-530-0438
NSN 6650-00-221-9425
NSN 5985-00-857-2903