Well... just as the title says, has anyone found a gasket material that works with the avenger flash back shield. looking to create a tight seal between the window to avoid any flashback.
any kind of small flexible hose ,like airhose from a fishtank works very well. just slice it open in one spot and lide it onto edges of the factory shield
I had this foam laying around that i used at one point...cut it down into a little strip and gently stuff it into the cracks...don't press too hard or the avenger will become loose (if suction cupped). Try a packing material seller. UPS might have some foam that you can just buy by the sheet...
I use the seal that comes with Whelen's Inner-Edge lightbars it comes in about 2ft sections and it works pertty well on the Avenger shields, as well as many other applications, but like TCO said the fish tank hose will work just as well I would recommend 1/4" OD tubing