This specification covers an ethylene propylene (EPM) rubber in the form of sheet, strip, tubing, molded shapes, and extrusions. This product has been used typically for parts, such as gaskets, grommets, and seals requiring resistance to phosphate esters and/or to ozone from -54 \mDC to +135 \mDC (-65 \mDF to +275 \mDF), but usage is ot limited to such applications. Not suitable for use in contact with petroleum base fluids due to excessive swell.