A metallic or nonmetallic circular item specifically designed to be placed at the breech-block end of a gun barrel chamber for sealing against powder gases. It is also used to seal against powder gases between a projectile and the gun barrel.
Classification: Parts and accessories of military artillery weapons of 9301.11 or 9301.19
NSN 5835-01-625-8604
NSN 5930-01-570-4101
NSN 5855-01-625-6106
NSN 6110-01-129-0892
NSN 5990-00-647-4008
NSN 6130-01-549-9290
NSN 5930-01-503-2088
NSN 6650-01-371-2356
NSN 5905-00-423-7698
NSN 6150-00-621-6082
NSN 5990-01-373-3104
NSN 6220-00-944-0111