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 5915-01-437-5653
NSN 6220-00-243-4205
NSN 5915-01-318-2230
NSN 4140-01-164-4935
NSN 6105-01-265-4023
NSN 5960-00-709-0499
NSN 6610-01-424-7813
NSN 6645-01-187-3704
NSN 6650-01-034-6040
NSN 6135-01-041-3829
NSN 5965-01-515-0589
NSN 5935-01-220-3737