FOCUS ON COMPATIBILITY! Compressed-air components include gaskets made of elastomer, such as NBR (Acrylonitrile butadiene rubber), Polyurethane or FKM/FPM ® (Fluorocarbon). In particular, it is necessary to verify the compatibility with: oils used in the air compressor oils used in the lubricator, if any cutting oils or fluids used on the machine, that may penetrate into the cylinder and reach the valves. We have prepared a compatibility table between a certain number of chemicals, elastomer and Hostaform, which is the most used technopolymer on our products. On page www.parker.com/o-ring/fcg/fcg.asp of the web site of Parker Pradifa, which is one of our gasket suppliers, there is an interactive table defining the incompatibilities. By way of an example, we indicate some oil grades that are certainly compatible with all the types of elastomer used on our products: lubricating oil: UNI and ISO FD 22 (Energol HPL, Spinesso, Mobil DTE, Tellus Oil) Oil for low-pressure compressors SHELL CORENA OIL D46 Oil for high-pressure compressors: SHELL RIMULA X OIL 40 Metal Work will be pleased to provide further information and perform research and tests, if necessary.