Stainless steel vacuum chamber: The chamber is made of 304 stainless steel, which is durables, pressure-resistant, wear-resistant, chemical-resistant, and high-temperature resistant to 160°F, which effectively extends the service life of the chamber Acrylic viewing window: With silicone ring, 20 mm/0.78 inch thickened transparent viewing window, its excellent transparency and wide window provide sufficient visibility for work. Silicone ring ensures sealing Low noise: The vacuum pump is equipped with 1 muffler to reduce motor vibration and equipment noise, making it run quieter. (Oil not included) Equipped with a pressure vacuum gauge to accurately measure the pressure value in the port Wide application: This vacuum chamber is suitable for degassing of polyurethane, silicone, resin castings, epoxy resins, and extracting essential oils from materials Easy installation: No special tools are required, and it can be installed in just a few minutes. The parts are complete, and there is no need to worry about not finding the parts you need. Note: Pump and oil are not included!