Plastic fuel tanks have gained widespread use in applications that include automotive, marine, construction, agriculture, power equipment, and all-terrain vehicles. Plastic fuel tanks are desirable because they can be formed in complicated shapes, are corrosion resistant, are light weight, have high puncture resistance, and are relatively low cost. Fluoro-Seal has developed two new technologies that can make plastic fuel tanks even better. One technology increases the fire resistance of plastic tanks, which enhances safety. The other technology increases the barrier properties of plastic tanks, which reduces the permeation of fuel through tank walls and enables plastic tanks to comply with current and pending environmental regulations.