I only rust blue ,but still it could do something...it would never be as alarming as the day I reached in to grab a bbl set with no insulated glove ,I like the heavy rubber insulated gloves just reach in and grab the bbls ,nice tactile feel you know you have them in your hand ...this one day I was running a large batch ,and switching on and off I forgot to put the glove back on ...my hand was on the bbls before it hit me ... on a calm day the streel of Newfoundland curse words can still be heard echoing off the beach up here