... :Pex-Al-Pex Pipe Fitting2) Comprises of :brass body of fittings,SS Sleeve ,Nylon parts and 2 EPDM rubber seal ring;3)Raw ... matrial: brass CW617N,CW602N,CZ132,DZR,C37700,C36000 ,HPB57 ... leak ,with press tools5) The body of the fittings, abtained by hot brass forged, avoids the porosity that could result from the ...