Typically an AC unit gasket will be shipped flat in a box and not rolled up. We do have a replacement AC unit gasket available with the Camco Universal Fit RV Roof Air Conditioner Gasket Kit # CAM25071 which might be what you're looking for.
If you're re-doing your roof then you might also need the LaSalle Bristol XTRM PVC RV Roof Membrane - White - 332-1/2 Sq Ft # 3441700534142711435. view full answer...
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