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 6650-00-901-1501
NSN 5960-01-094-4134
NSN 5996-00-080-7675
NSN 5998-00-027-5177
NSN 5895-00-772-5947
NSN 6240-01-290-5165
NSN 5985-00-845-6997
NSN 6620-00-553-8854
NSN 5945-00-578-4468
NSN 5998-01-366-6224
NSN 6650-00-960-5040
NSN 5920-01-618-6973