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 6620-01-625-2855
NSN 4140-01-420-8370
NSN 5998-01-019-7914
NSN 5960-01-588-5681
NSN 6240-00-960-8458
NSN 5999-01-570-3889
NSN 6240-00-949-4849
NSN 5999-00-857-1975
NSN 6650-01-177-4398
NSN 5950-01-087-6583
NSN 5925-01-317-6170
NSN 6645-01-373-5876