The Proflex Membrane Diffuser is manufactured using high Grade EPDM rubber ,Silicon and EPDM with PTFE coated with rows of perpendicular perforations' 'I" slits expand to produce fine bubbles then contracts immediately itself when air supply is stopped thus prevent tearing. The diffuser is a fine bubble aerator that has all the advantages of a higher oxygen transfer efficiency and trouble free operation with low maintenance and ease of installation