i was just looking around on google at some welding tape. i am in the process of plugging the holes i no longer need in my firewall. i would like to minimize the sparks going into the cabin, so could i use this tape on the cabin side of the firewall to A) hold the plug in place for welding, and B) to stop the sparks from getting inside? i have never used this before so i need some insight

http://www.cob-industries.com/backingtape.aspx

 

looks like that is exactly what its intended for!

 

thanks. is there anybody out there that has personally used this?