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?
