Your epoxy and plastic

[fkshiu]

How well does your epoxy adhere to plastic?

It seems that I have a teeny tiny fissure/scratch where the volute of my skimmer pump meets the pump body that is preventing a seal. I need a filler more than a glue as the fissure doesn't go all the way through to the exterior of the pump. So I was considering whether using a bit of epoxy to fill the fissure would be the best method of repair. It's the regular hard black plastic of a Sedra pump.

Thanks.