Description
The Grundfos 98434904 Shaft Seal Kit is an OEM-quality replacement component engineered to maintain the performance and longevity of Grundfos circulator pumps. Shaft seals are a critical wear component in hydronic and circulating pump systems — when they fail, leaks can lead to system downtime, water damage, and costly repairs. This kit provides everything needed to restore a proper seal and get your pump running like new.
Why Replace Your Shaft Seal?
Over time, shaft seals experience wear from continuous rotation, heat, and fluid contact. A compromised seal allows water to migrate along the pump shaft, resulting in visible leaks, reduced pump efficiency, and potential motor damage. Replacing the shaft seal at the first sign of leakage is the most cost-effective way to extend pump service life and protect the overall hydronic system.
Key Features
- OEM Grundfos replacement shaft seal kit — SKU 98434904
- Designed for precise fit and compatibility with applicable Grundfos pump models
- Restores leak-free operation along the pump shaft
- Helps prevent water intrusion into motor components
- Supports extended pump service life and reduced maintenance costs
- Ideal for hydronic heating and circulating pump applications
Application
This shaft seal kit is intended for use with compatible Grundfos circulator pump models. Always verify compatibility with your specific pump model and serial number before installation. Consult the Grundfos product documentation or contact your distributor for model cross-reference information.
Installation Notes
- Shut down and isolate the pump from the system before beginning any service work
- Drain the pump volute and allow components to cool before disassembly
- Follow all Grundfos service instructions for proper seal installation sequence
- Inspect related components (impeller, bearings) for wear during seal replacement
Trust Grundfos OEM parts to deliver the quality and reliability your hydronic system demands. The 98434904 Shaft Seal Kit is a smart, proactive investment in pump maintenance.
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