Everlast 4 is a biodegradable synthetic lubricant formulated for high chemical and mechanical stability to general hydrocarbon service. The synthetic polymer oils used in Everlast 4 make this an excellent all purpose plug valve lubricant and sealant for the oilfield and petrochemical industries. Everlast 4 is a blend of synthetic oils for use in valves carrying LPG, LNG, aliphatic hydrocarbon liquids and gasses, including kerosene, fuel oils, crude distillates (sweet or sour), water, condensate, dilute acids and caustics. It is waterproof and has excellent resistance to oxidation and high metal adhesion.