[ MATERIALS FOR PACKING AND SEALING-NAMELY, METAL SEALS AND HYDRAULIC FITTINGS SUCH AS TUBING SLEEVES, CONNECTORS, TUBE UNIONS, FITTING ENDS, NUTS AND ADAPTORS FOR PROVIDING JOINTS AND UNIONS IN HYDRAULIC TUBING SYSTEMS AND THE LIKE ]

HELMET FACE SHIELDS, NUCLEAR FLASH PROTECTION SHIELDS AND OTHER COMPONENTS OF OPTICAL DEVICES HAVING USEFUL TRANSMISSION OF ELECTROMAGNETIC RADIATION

TRANSPARENT WINDSHIELDS CUT TO SIZE FOR VEHICLES SUCH AS AIRCRAFT, MARINE VESSELS, LAND VEHICLES [, AND MISSILES ]