Hempaline Defend 640 is intended as a high performance tank lining for the storage of a wide range of petrochemicals including (but not limited to) crude oil up to 120°C [250°F], MTBE, produced water, alcohols, aromatic and aliphatic solvents, aviation fuels, gasoline blends, select acidic and caustic chemicals. The product is reinforced with a glass flake filler which reduces permeability while enhancing the lining's mechanical properties and chemical resistance, making it a preferred choice for areas subject to impact and abrasion.