I have a Kart Seat Pad that I need to fix to the seat with Velcro.

The issue is, I use an industrial Velcro which is permanently stiched into the pad but gluing the other side to the seat back has not worked.

Living in Florida the seat gets hot sitting in the sun, which in turn melts the adhesive holding the velcro to the seat, this as you can imaging gets really messy with sticky glue residue when the velco stip pulls off.

I need an adhesive for fabric/vinyl that I can apply to the velcro that attaches to the seat back that is flexible strong but will not break down when it gets hot.
(The Industrial Velcro is kinda grippy)

Any suggestions?