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