Graphite/SiC faces for caustic soda.
Graphite/SiC faces for caustic soda.
(OP)
Is it posible to use faces of graphite/SiC instead of SiC/SiC as an alterantive in case or not having these ones?
Some chemical incompatibility?
Does it depends on the pressure fluid?
Some chemical incompatibility?
Does it depends on the pressure fluid?





RE: Graphite/SiC faces for caustic soda.
RE: Graphite/SiC faces for caustic soda.
I haven't found any documentation about the crystallization temperature of the caustic soda with regard to the concentration and pressure.
Can you help me on this?
RE: Graphite/SiC faces for caustic soda.
There are other things to consider, all mechanical seals leak. The leakage rate is dependent on a number of factors such as seal diameter, pressure, speed, face flatness etc. Leakage is approx 5 to 10 cc/hr. As this leakage takes place the liquid will evaporate and the crystals will start to form. Eventually the crystals will build up and depending on the seal design you may experience seal Hang Up! I would recommend using sil vs sil with EPDM elastomers and an external spring design seal. When you experience crystallization flush it with water. Remember that the crystallization occurs on the atmospheric side of the seal hence the quench..
Trust this helps