Apologies if this is in the wrong section or has been asked before but I've looked and can't find anything. What's the name of the silicone gloop you use on the zip of the big silver BMW duffel. I thought you could use any old stuff but I was told not. Thanks
), and intend it's primary use for spark-plug/ lead insulation etc, but will be smearing some on zops etc for lubrication & waterproofing 
