The Carousel 6 Plus and Carousel 12 Plus can be used with inert gas, but are not suitable for pressurised reactions.
The Carousel PTFE caps and glassware are not rated for pressure. Our guidelines are that the maximum pressure is 1 psi above atmospheric pressure, i.e. slight positive pressure, when you are using inert gas. Keep the valves of the PTFE caps open when in use.
If high pressure were applied, the silicone septa in the PTFE caps should be pushed out and allow venting.