| The problem can be cross contamination to your cylinders which will be filled using 100% O2 If you have silicone on your valve threads and this gets into the hoses of the filling bank some time there after a fire may occur. It might not happen to you but some one later may have their kit go up in smoke or the gas monkey gets burnt. That is as a worst case. Which is I believe what happened at NDAC a couple of years ago when someone was checking the )2 content of their cylinders prior to a training dive. |