... /S sleeve 4.Size 16,18,20,25,32,1/2",3/4",1 Our reducing coupling brass ... press fitting is made of brass body,EDPM seal rings,stainless steel SUS 304 sleeve ... located in the end of the stainless steel sleeve, whether or not the tube has been inserted ... assures 100% safety after assembling EDPM seal rings, SUS304 sleeve and multilayer pipes. codedimensionpackage (pcs)8133.201620*2, ...