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 5925-01-278-8509
NSN 6240-01-355-3512
NSN 5920-01-029-3813
NSN 6610-01-642-1752
NSN 5950-01-530-3983
NSN 6130-01-550-0982
NSN 6650-01-261-5239
NSN 2925-00-973-9413
NSN 6240-00-109-5914
NSN 6620-00-844-4363
NSN 5960-00-594-0824
NSN 6110-00-628-5128