Instantly provides a water and vapor seal on either curved or flat surfaces. Ease of Installation -- No Tools Required. Weather and Corrosion Resistant. No Bolts or Gaskets Required. Requires No Sealants. Durable PVC Composition. Available in 3/8" through 6" sizes. Works with Steel Pipe, Schedule 35 and 40 Plastic Pipe. 70 Durometer. Chamfer ends of pipe for ease of installation. Lubricate the pipe with soapy water. Use hole saw to cut opening. IMPORTANT -See chart for correct hole saw size.