The method 1 wherein in step c there is further included the step of applying the filler under a vacuum to remove {HEAD ~ air} and causing the filler to replace the air inside {TAIL ~ the exterior tubing} 
The method 1 wherein in step c there is further included the step of applying the filler under a vacuum to remove { HEAD ~ air } and causing the filler to replace the air inside { TAIL ~ the exterior tubing }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL