I'm trying to calculate 
  something but haven't found the right formula. Let's 
  say the seal on my 1" prop shaft disintegrates. Just inboard of the seal, 
  the shaft goes through an opening that is 1.002". This opening is not of 
  any significant length The ambient pressure is 500 psi. How many gallons 
  or liters per minute would come in?
   
  I'd really appreciate any 
  pointers!
   
   
  thanks,
  
Alec    
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