That is within acceptable temperatures. Remember that it's under FULL load.
...BUT since it's a good after market cooler, that kind of temperature is REALLY bad, not so bad that it will get damaged as long as you don't keep the temperatures up for long though.
You might want to check the mounting...
To be clear, DON'T LEAVE IT LIKE THAT. I'm just saying, as long as you don't start stress testing it under full load for a long time or something, it shouldn't get damaged, so no need to be afraid of that while testing.