Chemical inertness and non-wetting properties make PTFE,Website:http://www.rayflon-seals.com,TFM, PFA ideal materials for use in semiconductor applications. Rayflon can produce large components in PTFE,TFM, PFA, which are thermally stable and clean for use in semiconductor equipment. This wafer cassette is made from high quality imported PFA pellets used for semiconductor field wafer cleaning when washing.Properties:Smooth surface and translucentHigh temperature resistanceCorrosion resistanceInert to chemicalsSpecs: 1.5",2",2.5",3",4",5",6"Other materials like PVDF wafer cassette also can be provided.