This specification covers a fluorocarbon (FKM) rubber in the form of sheet, strip, tubing, extrusions and molded shapes. These products have been typically used in components in contact with air and a wide variety of fuels, synthetic lubricants and specific hydraulic fluids from -29 to +204 degrees C (-20 to +400 degrees F), but is not limited to such applications. Each application should be considered individually. This class of fluoroelastomers is not recommended for use in high temperature stabilized, HTS, engine oils. Each HTS oil should be evaluated separately.