{TAIL ~ Both the tubular body} and the flange consist of {HEAD ~ flexible, resilient material}, e.g., elastomeric material 
{ TAIL ~ Both the tubular body } and the flange consist of { HEAD ~ flexible , resilient material } , e.g. , elastomeric material
TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH