711-6020 | Waterway 2.5" Heater & Pump Union Gasket

The Waterway 711-6020 Heater Union Gasket is an OEM-quality ribbed seal designed for 2½-inch heater or pump unions, often used with Waterway SVL56 high-flow pumps and Executive faceplates. Constructed from durable, chemical-resistant material, it ensures a tight, leak-free connection under high pressure and frequent thermal cycling. Precision-molded for reliable alignment, this gasket fits inside diameters around 2-7/16" and outside diameters of 3-7/16", helping maintain optimum water flow and preventing bypass that compromises system efficiency. A trusted component for leak prevention and long-term performance in demanding pool or spa environments.

Highlights

• Designed for 2½″ Heater or Pump Unions: Engineered specifically to replace original gaskets in Waterway SVL56 high-flow heater unions and Executive faceplate unions.

• Ribbed Design for Superior Sealing: Ribbed profile ensures tight sealing under pressure and prevents leaks that can reduce water flow or damage components.

• Durable & Chemical-Resistant Material: Crafted to withstand harsh pool chemicals, thermal cycling, and repeated use for long-lasting performance.

• Precisely Sized for OEM Fit: Tailored with an inner diameter of ~2-7/16" and outer diameter of ~3-7/16" to match union fitting dimensions precisely.

• Enhances System Reliability: Helps maintain stable water circulation and reduces maintenance by preventing leaks and ensuring efficient heater operation.

Includes

• (1) Gasket

Compatibility

• Waterway SVL56 High-Flow Pumps
• 2.5-inch Heater
• 2.5-inch Pump Unions

Additional Info

Need help with the Waterway 711-6020 Heater Union Gasket, designed for 2½-inch heater and pump unions? This section covers installation, sealing performance, and compatibility questions, with details for in-store availability.

Installing the 711-6020 Union Gasket

A ribbed gasket provides superior sealing when fitted correctly inside the union. This section explains how to install it for long-lasting performance.

How do I install the Waterway 711-6020 gasket in a 2½-inch heater union?

Can I buy the ribbed union gasket for SVL56 pumps at Discount Pool Mart today?

Do I need lubricant when seating the 711-6020 union gasket?

What’s the correct placement of the gasket inside the union fitting?

Troubleshooting Leaks and Pressure Issues

Leaks at heater or pump unions often point to worn gaskets. This section explains how to spot problems and fix them with a proper replacement.

Why is my pump union leaking even after tightening it down?

How often should I replace the Waterway 711-6020 gasket?

Can I walk into Discount Pool Mart and get this union gasket same day?

Does a bad gasket reduce heater efficiency or water flow?

Local Fit and Compatibility Questions

The 711-6020 fits several Waterway components. This section explains where it’s used and how to confirm compatibility in-store.

Which Waterway models use the 711-6020 union gasket?

Can I bring in my old gasket to match it with the 711-6020 locally?

Is the ribbed gasket stocked at Discount Pool Mart retail stores?

Does this gasket fit both SVL56 pumps and Executive faceplate unions?