These close-coupled, high volume 2", 3" & 4" self-priming pumps from Banjo are an excellent choice for liquid transfer including fertilizers, chemicals, water, etc. Cast Iron construction for durability. Heavy-duty double sealed bearings. Solid stainless shafts. Bolt-on threaded port flanges for easy maintenance. Stainless fasteners. EPDM gaskets, and o-rings (VitonŽ also available). Carbon-ceramic-VitonŽ mechanical seals. (3" & 4" Pumps include severe duty silicon-carbide-VitonŽ mechanical seal).