ahah... ok then.... Durometer is the measure of material hardness. this is not to be confused with a hardness tester.... durometers measure the hardness of soft things, that are often elastic or rubber, like a gasket. Maxwell hardness testers, measure the hardness of medal or other solid objects, like steel, and aluminum.
the conversion is easy its just multiplication and devision. it sounds like you used a faro to measure the runnout of the head. This tells me that your measurment given above was physicaly impossible. the standard tolerences witch a faro arm is capable of holding is around .0005 . this means that there is no way you could have measured the given varience with the tool that you used. no need for the picture, i get what your saying....
a quick sugestion that i might have, would be to measure the old gasket, compared to the new one. do a visual comparison, and see if the gaskets appear to be the same? is the head bowing down from the outside edges in? or up from the outside edges in? if its bowing down, its possible that you may fix this by simply tightening the head onto the jug. this will sench down, or flatten the bowing. understand?
anyways... i didnt take into account that your gasket could possibly be metal? if so, slap that bad boy on there, cause 15 thousandths crush should definatly be enough.... the standard i listed before was for felt/rubber gasket variences.... if it is felt or something else, then i do suggest you ask inspection if the have a "durometer". this will let you single in on exactly what thickness of gasket you need.
if it were me! id face the jug to match up! that way you will never have a prob!  |