To minimize these performance deficiencies in {HEAD ~ materials} used to limit {TAIL ~ air permeability}, special material formulations have been developed that comprise, preferably, an amorphous polyurethane based elastomer/rubber alloy 
used to limit
To minimize these performance deficiencies in { HEAD ~ materials } used to limit { TAIL ~ air permeability } , special material formulations have been developed that comprise , preferably , an amorphous polyurethane based elastomer / rubber alloy
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL REL 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 OTH OTH