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 6105-01-482-6301
NSN 5855-01-380-6186
NSN 5990-01-621-6969
NSN 5930-01-388-2562
NSN 5920-01-206-3977
NSN 5915-01-571-7341
NSN 5935-01-045-8963
NSN 5950-01-231-4902
NSN 6645-01-054-4423
NSN 5990-00-983-1813
NSN 5915-01-265-3960
NSN 6320-01-357-3222