Power steering leaks

Is there a seal or gasket that goes between the PS reservoir and the PS pump?

I have a leak there and am wondering what the fix is.

Should be a large O ring between the pump and the tank. Comes with reman pumps or by itself . Tank could be rusted through if metal or a loose line.

Plastic tank. No rust

Anyone know the part number offhand for the o-ring?

I replaced mine this summer,Dealer only offers a large bag of parts(o-rings,seals) that must fit every steering box ever on a Jeep.Had to sort thru to find right o-ring,but it did have the o-rings for the hoses in the bag.
Best bet is to take old o-ring to store and match it up.
Wayne