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 5996-01-580-0582
NSN 2925-01-622-8568
NSN 5975-01-465-3948
NSN 5910-01-292-5003
NSN 5985-01-422-2552
NSN 5945-01-328-5888
NSN 6130-01-551-1185
NSN 5996-01-500-5628
NSN 5998-01-196-5469
NSN 5998-00-259-0351
NSN 5950-01-359-4854
NSN 6610-01-409-1781