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Cortec 391 with a flangeBUMPER+Gasket

Nov 15, 2021



How to apply Cortec 391 with a flangeBUMPER+Gasket

For this you will need Cortec VpCI 391. We are going to paint the 391 on so we are going to use a paint brush and a bowl. Next you will need a flangeBUMPER+Gasket in the correct pipe size and pressure class. Here we have an 8” 150. And finally, you will need multiNUTS and screws.

We are going to start by mixing the VpCI 391 and pouring a small amount into our bowl. This product is tint able so you can order it in another color to make it easier to see. Next, we ensure that the flange face is clean and free from any oils or dirt. Now we take the 391 and apply it to the flange face going with the grooves of the gramophone. This product is water based and should not be applied in freezing temperatures.

Typically this take 30-60 minutes to dry. Once it is dry we are going to apply a second layer of the 391 going against the grooves of the gramophone. Depending on your environmental conditions a second coat may or may not be required. Now that the second coat is dry, we install the flangeBUMPER+Gasket on the flange using our multiNUTS and screws. First, we tighten the multiNUTS by hand and then go back with a drill to ensure an airtight seal. This product provides a medium to long term, indoor or outdoor protection.

The last thing we wanted to show you guys is how to remove the 391 before final bolt up. We will be using Cortec 414 cleaner to get the corrosion inhibitor off of the flange face. We start by unscrewing all the multiNUTS and pulling off the flangeBUMPER+Gasket. Then we spray the cleaner on a score pad and scrub off the 391. You want to ensure that you get the flange face completely clean before final bolt up.

Alright guys, that’s it, make sure you visit the flangeBUMPER+Gasket product page if you are interested in free samples!

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