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