Speck Pumps Shaft Seal [20mm Buna] (2920343310) filburmfg A diffuser like this is

A diffuser like this is useful because it helps channel water properly after it leaves the impeller

Useful when a more controlled application format is preferred

Replacement seal plate for compatible [Model 98] Speck pump applications

This type of part is especially useful when the original thermostat has failed

For compatible plumbing and valve service

Speck Pumps Shaft Seal [20mm Buna] (2920343310) filburmfg A diffuser like this isSpeck Pumps Shaft Seal [20mm Buna] (2920343310) is a replacement shaft seal designed for compatible Speck pump applications that use a 20mm Buna seal configuration. The shaft seal is a critical service part because it helps separate the wet end from the motor side of the pump, reducing the chance of water intrusion and helping protect surrounding pump components. This seal is commonly replaced during pump repairs, leak troubleshooting, motor service,