Fevdisil PB is a two-component polymer that forms an impermeable barrier. It is resistant to water and weakly acidic or alkaline liquors. It makes a wall airtight or watertight or plugs a small hole. It polymerizes in the open air or under water, without releasing or releasing secondary products. The polymerized film has good mechanical strength and is particularly resistant to scratches. Its blue color identifies the place it was applied.