When clamped between flange surfaces, the edge coating engages, conforms to, and seals against the flange surfaces to provide a seal against both interfacial and intersticial migration of {HEAD ~ fluid} past {TAIL ~ the gasket} 
past
When clamped between flange surfaces , the edge coating engages , conforms to , and seals against the flange surfaces to provide a seal against both interfacial and intersticial migration of { HEAD ~ fluid } past { TAIL ~ the gasket }
OTH OTH OTH OTH OTH OTH OTH OTH OTH 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 REL TAIL TAIL TAIL TAIL TAIL TAIL