90 2.1L

Does anyone have any advice on coolant pipe repairs ?

I was about to change out the two large hoses that feed the radiator and
noticed that where the return hose clamps to the return straight pipe
there appears to be a small crack that is allowing the coolant to weep
past the clamp. I was hoping to not replace the pipes just yet but
realize the plastic gets brittle and will fail SO thinking that with
maybe epoxy and or fiberglass the end could be repaired ?  Not sure what
will adhere to the plastic ?  Are the original ones made of PVC ?

-john