So I changed my opti and while installing the heater hoses onto the newly installed waterpump the heater hose inlet became loose to the point I pulled it out. See the pic below, Is there a way to fix it? Like with Permatex or something?

 

I'd look into this:
http://www.permatex.com/products/Aut...e_Retainer.htm
I used it to seal the freeze plug on the back of the water pump.

 

That def looks like the ticket. Thanks