I see what you're saying, you can get the clearance from the chart, and then find a specific O-Ring with that recommended diametrical clearance. My problem is, the recommended clearance for different sizes is a fairly large range.
If, for example, you look at the chart on this page...
I have seen this chart, but this only relates clearance gap to pressure rating. Can I then assume that any O-Ring diameter (thickness) will work as long as I have the proper clearance?
I was thinking that the diameter of the O-Ring material would also be important seeing as larger diameter...
Could anyone tell me how to select the proper O-Ring size necessary to hold back a specfic pressure? There are formulae everywhere telling the dimensions of the gland, the dimensions of the clearance, the material to be used etc. but all the calculations I have found assume that you have...
Does anyone know the proper procedure for making up polished rod connections? Do you use the same displacement card as for sucker rods? Does API, or anyone for that matter, publish any recommended procedures specifically adressing polished rods?
