Allowable Seal Leackage

[boo1]

I need help determining how much should be allowable seal leakage.

Seal oil to ambient
Oil Mil-PRF-23699 (5mm**2/s synthetic ester base stock) Kinematic Viscosity , @ 40 deg C cSt=25.26
Pressure 1800 psi
Seal Viton A, OD 5.395", ID 5.14"
Speed 1285 RPM
Balanced condition
Contact stress on seal 14.27 psi
Surface finish on sealing surface 16 micro inches

 

[LittleInch]

I've only seen this information direct from the seal supplier or pump vendor. Too many variables for anyone to really give a response to this.

My motto: Learn something new every day

Also: There's usually a good reason why everyone does it that way

 

[1gibson]

Even then the vendor will be reluctant, it should be given as approximate, not allowable. Nobody wants to handle a warranty claim for "excessive" seal leakage that turns out to be just slightly more than estimated.

 

[boo1]

waiting in Manf for a week