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 5930-01-046-5852
NSN 5950-01-539-2089
NSN 6650-01-341-5330
NSN 5935-01-437-5360
NSN 6645-01-264-6778
NSN 5975-01-381-6933
NSN 5895-01-193-0106
NSN 5960-01-207-9544
NSN 6650-01-655-0762
NSN 5925-01-099-9542
NSN 5945-00-099-9857
NSN 5975-00-078-2948