2009-2018 Dodge RAM (and 2019 Ram Classic) third brake light / Center High Mounted Stop Light (CHMSL) gasket. Fixes 3rd brake light leaks. This material will not shrink or take a set like the cheap factory PVC foam gasket. This gasket is a .187" thick, automotive spec, EPDM foam rubber gasket.
Note: The old gasket has to be cleaned off the light. When I put this on my own RAM getting ALL the old gasket and adhesive off was a real PIA but necessary for a good seal. Shown in the 3rd picture is the gasket after about 3 months of use (testing) on my truck.
Materials .187" high quality automotive spec black foam rubber with adhesive backing to attach to light. Much better material than OEM