Carbon seals are typically used in which pressure condition?

Carbon seals are best suited for low pressure differentials due to their material properties and design characteristics. These seals utilize carbon components that operate effectively under conditions where the pressure variations are minimal. In low pressure situations, carbon seals are able to maintain a proper seal while accommodating slight movements and thermal expansions without excessive wear or failure.

Using carbon seals in low pressure environments ensures that they can provide a reliable and effective sealing solution, as they can handle the lower mechanical stresses that accompany such situations. Additionally, carbon seals are less prone to damage or degradation in these conditions, allowing for longer service life and reduced maintenance requirements.

In contrast, high or medium pressure differentials introduce greater mechanical stresses and potential for wear, which is more suited for seals made from harder materials. Thus, carbon seals are not typically used in these scenarios where the pressures involved exceed their operational capabilities.