The method 14 which includes selecting an elastomer from {HEAD ~ the group} of elastomers consisting of nitrile butadiene rubber, fluoro elastomers, including {TAIL ~ perfluoroalkyoxy polymers}, and ethylenepropylenediene monomer 
The method 14 which includes selecting an elastomer from { HEAD ~ the group } of elastomers consisting of nitrile butadiene rubber , fluoro elastomers , including { TAIL ~ perfluoroalkyoxy polymers } , and ethylenepropylenediene monomer
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH