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 2925-01-424-0235
NSN 4140-01-065-1884
NSN 5945-01-521-2216
NSN 4140-01-462-1336
NSN 6220-00-492-1775
NSN 6150-00-891-7922
NSN 2925-00-081-3547
NSN 5996-01-307-8690
NSN 5960-00-103-0596
NSN 5920-01-364-1335
NSN 5910-01-613-3049
NSN 6240-00-372-4841