will marine heat shrink protect from gasoline?

I had to install a new fuel pump for someone and I had to splice into the old wiring harness and solder a new harness for the fuel pump. I soldered the connections and sealed them over with marine heat shrink from harbor freight. is this safe for long term? as for today the truck ran fine but I dont know if I really made the right call using regular marine heat shrink. is it gasoline safe?

Anonymous2017-09-03T21:07:22Z

Ive never seen any heatshrink that will stand up to fuel Ive covered stripped bits of insulaton on fuel pump wires with Permatex Motoseal # 29132 before then put them in a day or 3 later

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Anonymous2017-09-03T19:59:34Z

I don't know but you could run a field test.Put a piece in a jar of gasoline.

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