Also, in some cases a polymer layer is situated between the annular core and the cover, whereby {HEAD ~ rotation} between {TAIL ~ the cover} and the core is reduced 
between
Also , in some cases a polymer layer is situated between the annular core and the cover , whereby { HEAD ~ rotation } between { TAIL ~ the cover } and the core is reduced
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH