The liner 30 is formed of {HEAD ~ a flexible material} preferably a rubber such as {TAIL ~ a TPR rubber} which is known in the plumbing art 
The liner 30 is formed of { HEAD ~ a flexible material } preferably a rubber such as { TAIL ~ a TPR rubber } which is known in the plumbing art
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH