EternaBond DoubleStick
Utilizing EternaBond's pure advanced MicroSealant, sandwiched between 2 removable protection layers, DoubleStick is sticky on both sides. It is perfect for use as a gasket when installing windows, vents, etc. on RVs, mobile homes, steel buildings, etc. DoubleStick is also the perfect lap adhesive. Once DoubleStick is applied, you can virtually forget about leaks! In addition, DoubleStick can be folded or rolled into a bead, and it can be used as a moldable sealant or gasket. DoubleStick comes in standard rolls 60 mils thick, 50' long, and 2", 4" and 6" wide.
For more information see the above pdf.