Installing Stainless Steel Sink

   I am installing a new stainless steel sink in our camper with a formica counter top. Which is best for a sealant acrylic caulk or plumbers putty? Or is there something better than those two?  Instructions say to use acrylic caulk but I am reading that will dry and crack over time and the vibration of the camper while traveling would increase the likelihood of it failing. I have read a good quality latex caulk is good but maybe that is only for a house where there would be limited vibration. I have used plumbers putty before in a camper and seemed not to be a problem wanted to know if it would be better to use something different.