Many of the sleeve type will come apart, sleeve and crinkled up tin material are two different pieces. IIRC duralast from AZ will. Pretty sure they use fel-pro repackaged.
My hummer used 2 when it was n/a. I never had a problem, reused the old ones a couple times. Put in new cheapy pepboys ones when I dropped in the new long block, and they worked fine for years. Removed and reinstalled pep boys ones once. My new turbo set up does not use them.