• Specifically designed for use with Hydrotech Series Systems
• 6-pack
• Also available as a 3-pack

The hydrotech replacement O-ring 34201026 is the rubber gasket that seals the
housing sump to the top for a wide variety of systems from hydrotech and other
brands. You will need one O-ring for each sump and these gaskets should be
replaced once every 3 filter changes. Do you have a slow leak from your sump?
replace the O-ring to prevent leaks.