Originally Posted By: cornfused
"USUALLY" black means nitrile and orange means silicone. You can clearly see the deformation of the nitrile one I took apart.
Bill, you've taken apart many filters, have you not seen this problem often with either?
With the Fram?
Nope. I've seen the wavy element with quite a few filters (I think it is due to the temps that a filter sees) but they still filter.
As far seeing the ADBV being warped in all the filters I've cut open? No. IIRC the valve sits on the top of the filter pressed upon the base plate. It does not matter if it is straight alone, it matters if it is pressed all the way around the base plate when the element is in place.
When taking apart filters I always look carefully to make sure that everything fits tight when pressed in the can.
Take care, bill