Onga Valve to Tank Oring E500, BR600, LSF20 & LSF24

Onga Valve to Tank O-Ring – Genuine Replacement Part

Stop leaks between the multiport valve and tank on your Onga sand filter with this genuine replacement O-ring. Compatible with the E500, BR600, LSF20, and LSF24 models — this is Part 12 in the Onga LSF20/LSF24 parts diagram.

What does the valve-to-tank O-ring do?

The valve-to-tank O-ring creates a watertight seal between the multiport valve and the filter tank. Over time, UV exposure, chlorine, and pressure cycles cause the rubber to harden, crack, or deform — leading to water leaking around the valve base.

Key Details

• Part Number: 5306300
• Diagram Reference: Part 12
• Compatible Models: Onga E500, BR600, LSF20, LSF24
• Vendor: Pentair (Onga)
• Genuine replacement part

Symptoms this part fixes

• Water leaking from the base of the multiport valve
• Visible water pooling around the valve-to-tank connection
• Loss of filter pressure due to seal failure

Not sure if this is the right O-ring for your filter? Check your model number on the filter tank label or contact our team — we're here to help you get the right part first time.