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 5998-01-266-2330
NSN 5950-00-372-5591
NSN 6150-00-439-8762
NSN 6240-01-079-3704
NSN 7035-01-072-3451
NSN 5996-01-517-8622
NSN 6135-01-162-0943
NSN 5965-00-015-7408
NSN 5835-01-615-8864
NSN 6135-01-377-5729
NSN 6220-01-253-0380
NSN 4140-01-634-0330