Thick Wall Pressure Vessel is cylindrical thick walled glass, with an internal threaded port and a PTFE thread sealing cap (including a 0-type fluorine rubber ring).jpg. When leaving the factory, each pressure test can withstand 5 atmospheres of pressure and can be used for pressurized reactions. 

* Thick wall and pressure resistant：high borosilicate thickened glass, pressure resistant and high-temperature resistant. 

* PTFE sealing cap：Acid and alkali resistant and various organic solvents. The internal thread of the bottle mouth has good sealing performance. 

* Hig Quality Glass Material: Made from borosilicate glass. The thermal expansion coefficient is only 1/3 of that of ordinary glass, it boasts excellent chemical resistance, High hardness, high transparency, and corrosion resistance. 

* Caution:Due to varying conditions,glass vessels cannot be guaranteed against breakage under pressure.Always work behind a safety shield.