Gluing Machine

I am looking for a dispensing machine for polyurethane with a handheld gun-type dispenser.  
I need it to mix a 2-component polyurethane at a 2:1 ratio by volume.  
The mixed viscosity is 375 cP, with component A viscosity at 300 cP and component B at 640 cP.  
Preheating for component A is preferred but not required.  
I require only one unit.

I am looking for a machine to make full leather wrapping cases.

We are looking for disposable toilet seat covers.