Burks 999-0238 Pump Shaft Mechanical Seal 12mm/16mm for Grundfos GRF-B Series SiC/Carbon High-Performance Replacement Seal for Grundfos CH & CNP Pumps

Burks 9990238 Mechanical Seal for Reliable Pump Shaft Sealing

The Burks 9990238 is a high-quality mechanical shaft seal engineered for dependable leakage control in Grundfos GRF-B–style pumps, including CH and CNP series models. Built for durability in demanding water, oil, and wastewater applications, it provides a secure sealing interface between the rotating shaft and stationary pump housing while supporting long service life and consistent performance.

Why It Helps
This replacement mechanical seal delivers stable, reliable operation using proven sealing materials such as carbon, silicon carbide, and ceramic. Its compatibility with 12mm and 16mm shaft sizes makes it suitable for a wide range of Grundfos pump configurations, while elastomer options like NBR, EPDM, FKM, and PTFE support dependable performance across varying temperatures, chemicals, and fluid conditions. Designed as an OEM-equivalent replacement for the Grundfos GRF-B seal type, it restores proper pump integrity without complexity.

Key Highlights

• Designed as a direct replacement for Grundfos GRF-B mechanical seals, supporting CH and CNP pump series for straightforward maintenance and part matching.

• Uses durable sealing faces such as carbon, SiC, and TC to maintain stable shaft sealing in clean water, sewage water, oil, and moderately corrosive fluids.

• Offered in 12mm and 16mm configurations, enabling accurate fitment to pump shafts requiring these common mechanical seal sizes.

• Available with NBR, EPDM, FKM, and PTFE elastomers, allowing the user to select appropriate chemical and temperature compatibility for their pump system.

• Constructed with steel, SS304, and SS316 metal components to enhance structural reliability in diverse industrial environments.

Applications
Ideal for clean water systems, sewage handling, oil circulation, and general-purpose pump operations requiring a 12mm or 16mm GRF-B–style mechanical seal. Suitable for Grundfos CH and CNP pumps and systems using compatible seal dimensions and materials. This seal delivers dependable long-term performance for maintenance, repair, and replacement needs across standard industrial and commercial pump installations.