No! No! No!
Do not use silicone with hydrocarbons.
Unless you’re looking to make up for the lack of a PRV.
Had a major manufacturer ship a rig with a couple of silicone gaskets in it. Pulled parts of them out of the filter after the first solvent run through.
Explained the leaks that hadn’t shown up with 200psi nitrogen…
Silicone gets a D with Butane.
(D =Severe effect; not recommended)
https://www.process-controls.com/Vissers_Sales/pdf/Chemical_Chart.pdf
Even terps will eat it!