This is a newbie question. How do you determine the right size of O-ring to use for the end caps in you WTC. I have pieces of polycarbonate that are 2"od and varies between 1 7/8" and 1 55/64"id and 2 1/4"od and varies between 2 1/8" and 2 7/64"id. I want to make a mating bulkhead that will connect the two together without leaking but be disconnectable like an endcap. I don't know how to figure out what size of rubber O-rings to use on each side. Can someone tell me how you decide what sizes to use to make endcaps watertight but still removable?
Thanks,
Thanks,
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