fuel heater direction?

[CCooper]

I recently replaced the fuel filter on my 93 and it has been leaking. I am thinking that I got the fuel heater in up side down. One side is metal and the other is plastic with a grove in it for a gasket. Does any one know witch is the up side?



Thanks, C Cooper

 

[Greenleaf]

Metal down. Plastic groove up WITH the QUAD RING!