Blue Monster thread sealing tape is manufactured from PTFE resin, a polymer consisting of recurring tetrafluoroethylene monomers whose formula is (CF2-CF2)n. It is inert and compatible with a very wide range of materials. Use Blue Monster on threads made from galvanized steel, iron, brass, copper, aluminum, stainless steel, polyethylene, polypropylene, PVC, CPVC, ABS, fiberglass and more.
It can be used on pipes carrying the following:

Acids, concentrated
(see precautions) and Acids, dilute
Alcohols, Gasohol
Aliphatic solvents, Aromatic solvents, Chlorinated solvents
Ammonia, liquid
Caustics, concentrated
(see precautions)
Compressed air, Steam, Water
Cutting oils
Diesel fuel oil
Ethylene glycol, Glycerine
Fatty acids
Heating oils, Kerosene
Hydraulic fluids, Hydraulic oils
Hydrogen, gaseous and liquid, Inert gases, gaseous and liquid
Jet fuel
Ketones, Petroleum solvents
Liquid Petroleum Gas, Natural gas
Mineral oils, Vegetable oils
Nitrogen, gaseous and liquid
Soap, liquid