Petroleum Service Company provides a variety of water base asphalts that are environmentally friendly with zero volatile organic content (0 VOC) and zero HAPS (0 HAPS). Tectyl waterborne asphalt emulsion corrosion inhibitor products are suitable for the complete undercoating of transportation equipment. Tectyl water base asphalt undercoating provides superior sound deadening, abrasion resistance and adhesion to a variety of substrates including hot and cold rolled steel, galvalume, galvaneel, aluminum and wood. The Tectyl 6427 meets Federal Specification TTC-520B which makes it an excellent undercoating for school and metro/transit buses. The Tectyl 351S is a water base asphalt undercoating/sound deadeners. Each Tectyl rust preventative coating has detailed material safety and technical data sheets. All of these water base asphalt undercoating/sound deadener products can be purchased in totes, drums, kegs, pails, quarts and pints.