90' oil filter adapter keeps leaking!

i got a used adapter then got a brand new gasket set. doesent leak a bit. and i dropped all the seals in the dirt at least 5 times. it was a real pain to get on but once i did it worked. if you have new gaskets and it still leaks check to make sure you installed them in the correct spots then if it still leaks try getting the engine hot then try and tighten the bolt again.