Profile: Stamford Scientific International, Inc. specializes in manufacturing diffusers, ceramic retrofits and replacement membranes. Our disc diffusers are provided with compression molded membranes. They are made of standard materials such as EPDM and fluoroelastomer layered EPDM. Compression molding ensures a diffuser with even specific gravity and uniform tear resistance. The tear resistance of a compression molded part is multi-directional, which is typically not found in injection molded uni-directional parts.