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 5990-01-261-2962
NSN 6610-00-023-0076
NSN 5996-01-348-7370
NSN 5999-01-425-1377
NSN 5990-00-617-1422
NSN 5910-01-499-4766
NSN 5915-01-116-2932
NSN 6240-01-510-9299
NSN 6135-01-255-9129
NSN 5905-01-279-0189
NSN 6240-00-189-2762
NSN 5975-01-169-1566