Seaira Tri-metal Diaphragm for Second Stage Black Silicone 2.5 inches O.D.
Seaira Second Stage Diaphragm Black Silicone 2.5 inches Outside Diameter NEW! BEST QUALITY SILICONE COMPOUND. IT FITS SEAIRA TRI-METAL, SEAIRA TITANIUM, M-9311, PROSUB, AND IST 0-10 AND 0-20 Check out my other items!