AstralPool - Diffuser O-Ring for HZS-750 Pool Pump (1 HP, Series II) - 48387R0013

AstralPool – Diffuser O-Ring for HZS-750 Pool Pump (1 HP, Series II)

This is the genuine AstralPool replacement diffuser o-ring for the HZS-750 750W (1 HP) Series II pool pump (parent SKU 48387). Seated between the diffuser and the pump body, this precision o-ring maintains the hydraulic seal that keeps water flowing efficiently through the pump’s impeller chamber. Replacing a worn or damaged o-ring promptly prevents pressure loss, water leakage, and unnecessary strain on other pump components.

Compatibility

This o-ring is designed exclusively for the AstralPool HZS-750 750W Series II pool pump (reference 48387). It occupies position 13 in the official Fluidra exploded-view diagram for that pump. Always cross-reference your pump’s model number and exploded-view diagram before ordering to ensure an exact fit — do not use this part with other pump models or series.

Why Genuine Matters

Genuine AstralPool o-rings are manufactured to the exact material specification, durometer, and dimensional tolerances required by the pump’s engineering design. A correctly sized o-ring ensures a consistent hydraulic seal under the pressure and temperature cycles of pool operation, reducing the risk of slow leaks that can go unnoticed and cause premature wear to the diffuser and pump housing.

Installation

Fitting this o-ring requires isolating the pump from the power supply and closing all gate valves before disassembly. The diffuser must be removed to access position 13; the old o-ring should be fully extracted, the seating groove cleaned, and the new o-ring seated evenly without twisting before reassembly. If you are not confident working on pressurised pump systems, professional installation is recommended.

This part is currently not available to order online. Contact us for availability and a quotation.