110 volt outlet 160 degrees. Is that safe?

I would replace the outlet from what you describe and it might not be a bad idea to replace the plug on the appliance. The only kinds of plugs (cord caps) I use anymore are the big plastic 2 piece kind that tighten the wire like set screws (not wrap around the screw) They cost more, but are tough and work well, last a very long time.
Not sure why, but only the kitchen and bathroom outlets are like this one with the breaker-type buttons on the front. Haven't pulled any others apart yet. Do the screws tighten on the wires or does it just stab in?
Not exactly 230 Volts and not Celsius. :rofl:
Oh that'd be much more exciting though. Like when my welder exploded