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 4140-00-580-7038
NSN 5930-01-406-4281
NSN 6135-01-307-6006
NSN 5945-00-954-0471
NSN 6240-01-398-0646
NSN 5975-01-409-1140
NSN 5975-01-045-1483
NSN 5915-01-581-3145
NSN 6620-01-014-3219
NSN 5960-01-367-6153
NSN 5915-00-010-0635
NSN 6240-00-141-6143