The semiconductor device 15, wherein {HEAD ~ the spacer} is {TAIL ~ an organic material} selected from the group consisting of butyl rubber, EPDM rubber, silicone rubber, and fluororubber 
is
The semiconductor device 15 , wherein { HEAD ~ the spacer } is { TAIL ~ an organic material } selected from the group consisting of butyl rubber , EPDM rubber , silicone rubber , and fluororubber
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH