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 6650-01-206-5857
NSN 5925-01-061-9717
NSN 6240-01-589-7218
NSN 6150-00-954-8625
NSN 5960-00-732-8009
NSN 4140-00-816-7049
NSN 5998-01-358-1944
NSN 5915-00-247-2127
NSN 5990-01-565-2226
NSN 4140-01-158-4139
NSN 6150-00-596-9882
NSN 2925-00-369-9473