Adhesive for mat to top of tank suggestions

GHOST RUSTERS said
Hey FABO, what do you guys recommend or use for adhesive of a new insulation mat to the top of a new fuel tank?

1965 Barracuda

Spectra fuel tank and Tank Pad Insulation - .090" Masticated Rubber from DMT

Also, lubricant for filler tube into tank grommet? I read syl-glyde is decent?

Thanks everyone!
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No adhesive needed, it just gets sandwiched between the tank and the trunk floor/spare tire well.
On the filler tube I've never used anything but a smear of general purpose grease. Have read where some guys use Vaseline.