I’m sure it’s some type of PTFE or PFPE lube. I wouldn’t use anything with silicone because silicone can cause galling which can cause jamming.
Krtox is a brand name but there are a lot out there that are reasonable in price. Lightning Grease is another Renigeer Fluoropolymer Grease Lubricant (1/4 lb. Jar) - Extends Machine Life, Prevents Corrosion - Machine Lubricant: Amazon.com: Industrial & Scientific
Silicone is not a metal to metal lube!