Be careful where you use velcro on kerosene tanks. I am not sure about kevlar tanks but over a period of time the oils from kerosene will migrate through plastic tanks such as a UAT tank and make the adhesive soft on the velcro. The adhesive becomes a gooey mess so, like John, I use Zap a Dap a Goo. It only takes a drop to hold the tanks in place and it is still very easy to remove...Gary