Fuel Cap With Base, Vented Designed for use on above ground storage and transfer tanks for assorted gasolines and diesels. Can also be used for small lubricant and non-pressurized hydraulic reservoirs. Designed to hold a constant tank pressure reducing evaporation loss, contamination intake and to prevent over expansion and contraction of the tank. Helps control fuel quality by keeping moisture out Provides an easy opening for filling the tank Reduces loss of fuel due to evaporation during fuel storage Reduces content spills in transfer reservoirs during transport by closing the system
