Gasket seat 'A': Must be smooth and free of indentation roll marks, scratches, imperection and projections from the end of the pipe to the groove in order to provide a proper sealing surface. Dimension 'A' to be measured from square- cut end of pipe. Beveked end pipe not reco mm endedGroove Width "B": The bottom of the groove to be free of dirt, chips etc. That may interfere with coupling assemblyGroove Depth "D" : Must be of unifrom depth for the entire pipe circunfrence and be maintainedwithin the 'C' dimension tolerance listedMin. Wall Thickness "T": For information only. Actual dimensions must be per groove diameter 'C'
