this question has been asked a few times already, I think I was first though:
the answer is yes - and you have a few options, the main two I’ve used are Sylgard 184, and Qsil 216 - you do have to be very careful both peeling out the old silicone and pouring in the new - any specks of dust in the base of the tray or in your new silicone will obviously affect all the prints from that tray.