bitu.®seal plastic is a hydrocarbon solvent-borne, asbestos-free, reinforced bituminous mastic. bitu.®seal plastic is a heavy duty mastic sealer and repair compound. bitu.®seal plastic may be used to seal most roofing defects: sheeting laps, valleys, gutters, down-pipes, enlarged screw holes, to repair roof cracks, flashings, cracked tiles and patch repairs to tanks.
