Seal Balance Ratio And Face Width Adjustment
Seal Balance Ratio And Face Width Adjustment
(OP)
I was hoping one of the seal experts could advise how they typically approach changing the face profile of the primary ring when trying to increase/decrease the balance ratio for various reasons.
Is the adjustment typically made with the primary ring OD or the primary ring ID? I would think in effort to utilize standard o-ring sizes, the balance diameter is typically unchanged. By definition, the OD is used in both the numerator and denominator of the equation, so I would think the variable of choice would be the ID dimension of the primary ring. Would this be the correct assumption?
Is the adjustment typically made with the primary ring OD or the primary ring ID? I would think in effort to utilize standard o-ring sizes, the balance diameter is typically unchanged. By definition, the OD is used in both the numerator and denominator of the equation, so I would think the variable of choice would be the ID dimension of the primary ring. Would this be the correct assumption?





RE: Seal Balance Ratio And Face Width Adjustment
I dont know why you are asking this question however I have attached some information for you. I suggest that you do not play with the Ballance ratio of the seal because it may have a detrimental affect on the seal performance. generally speaking seal balance in in the order of 70% and sometime the balance is changed to either lighten the load or increase the load. for example if you had a hydrocarbon with high VP and the seal leakage was high, by increasing the BR you will achieve better sealing but sacrifice wear. If this is a general question then fine but if you start playing with seal faces you also start moving away from standard parts and you have a special on your hand.
trust that this information is of some help to you.
RE: Seal Balance Ratio And Face Width Adjustment
RE: Seal Balance Ratio And Face Width Adjustment
In your previous thread you said you were a complete novice , does water have the same characteristics as a hydrocarbon? Do you understand what changing the balance of a seal does a seals performance?
RE: Seal Balance Ratio And Face Width Adjustment
By the way, reference this website: http
It states "In its gas form, water behaves much like a flashing hydrocarbon with respect to load support and lubrication at the seal faces..."