All stainless steel SAE 304 construction (except cart) with red and yellow bands. Less than 10 Ohms of resistivity. This unit is available with an optional Activated Carbon Cartridge for the adsorption of toxic/nuisance fumes and vapors. Exhaust connectors and hoses for venting with diverse diameters are also available. This fuel and solvent recovery vacuum cleaner is specifically designed for the recovery of highly flammable, toxic liquids. This vacuum cleaner system is ideal for the de-fueling and de-puddling of fuel tanks and wings on military or civilian airplanes, as wll as for recovering fuel spills. All parts of the vacuum cleaner system have electrical continuity and bonding techniques to ensure static dissipation. Grounding reels are also available for added security.