Perma Boot 312-4 BLK Repair Plumbing Vent Boot Repair System, 4-Inch Fits 4-Inch PVC Pipes, Black

The average pipe boot gasket fails within 7 years. PERMA-BOOT 312 takes the rubber ring/gasket out of the equation by covering it up completely. PERMA-BOOT 312 is warranted for the life of the shingle..