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 5998-01-350-7363
NSN 6240-01-487-4386
NSN 6240-00-104-4662
NSN 5996-01-421-9391
NSN 5935-01-248-0059
NSN 5985-01-350-6474
NSN 5965-01-075-3148
NSN 5835-00-286-5432
NSN 5905-01-204-1362
NSN 5960-01-641-5493
NSN 5855-01-078-4180
NSN 6650-00-005-6649