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O ring sizing

O ring sizing

O ring sizing

(OP)
Hello, All:

I am new the forum and I would appreciate any help you can offer.

I have to size an o-ring and I do not know the method to do so.  I will describe the geometry of the system and please ask for clarification.

I have two plates ~ 0.375" thick and of simliar cross-sectional area.  One is 416 SS and the other is copper.  These plates are stacked on top of another and held together with mechanical fasteners.  The SS plate has a clearance hole (the dimensions are open) for a 0.460" OD 304 SS tube.  The tube is just long enough to to pass thru the thickness of the 416 SS plate, but it does not stand proud of the plate.  The copper plate has a corresponding 0.500" thru hole which is located coincident with the tube and hole in the 416 plate.

Liquid travels thru the hole in copper plate into the tube.  

We desire a seal and the best option I have to date is an oring around teh tube which will be compressed when the two plates are fastened together.

I can machine any feature necesaay in the 416 SS plate and both plates are extremely flat.  There is ~ 100 psi od liquid exiting the hole in the copper plate which has a comercial liquid connector on the opposite side.

Nothing can protrude into the hole in the copper plate and a compression fitting would take up too much room.

I would appreciate an insite into sizing the couterbore in the 416 SS plate or a better solution.

Thank you

Mac

RE: O ring sizing

Get a Parker o-ring handbook.  You can download it here:

http://www.parker.com/ead/cm2.asp?cmid=3903

Get a paper copy when you can.  Study it.  

Do not deviate from the dimensions and tolerances given.

Mike Halloran
Pembroke Pines, FL, USA

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