Here is Dow Corning Molykote 33 light grease, comes in medium or light. alot of rc helicopter guys use this on everything rubber and plastic where lube is needed. tube should last a lifetime.....:pilotfly:
https://www.amazon.com/Dow-Corning-Molykote-Grease-Lubricant/dp/B0141NIS8M/ref=sr_1_2?s=industrial&ie=UTF8&qid=1484078139&sr=1-2&keywords=Dow+Corning+Molykote+33