Can I use plumbers silicone grease as a substitute for silicone dielectric grease? They both appear to contain dimethypolysiloxane and silicone dioxide.
Is this the same product given different application names, one for plumbing, one for waterproofing electrical connections?
The plumbers grease is food grade, so maybe that's the distinction
The DANCO Waterproof Grease is designed for use as a lubricant for faucets and valve stems. It is NSF 61 approved and meets or exceeds the requirements of FDA regulation 21. This grease works well in temperatures between 0 - 400 degrees Fahrenheit.
And looking into NSF 61
If you manufacture, sell or distribute water treatment or distribution products in North America, your products are required to comply with NSF/ANSI/CAN 61: Drinking Water System Components – Health Effects by most governmental agencies that regulate drinking water supplies
Given the above it's probably not a good idea to use dielectric grease where plumbers grease is called for, but going the other-way I'm curious if its suitable.