Astralpool Hurlcon O ring for ZX cartridge filter lid - 78110

Astralpool Hurlcon ZX Cartridge Filter Lid O-Ring – 78110

A leaking cartridge filter lid is almost always caused by a worn or damaged O-ring. This genuine Astralpool Hurlcon O-ring (part 78110) is the correct replacement for the ZX and Smart series cartridge filter lids — restoring a secure, leak-free seal quickly and easily.

Compatible Models

• Hurlcon ZX50, ZX75, ZX100, ZX150, ZX200, ZX250, ZX310
• Astralpool Smart 350, Smart 450, Smart 550

Product Specifications

• Part Number: 78110
• Brand: Astralpool / Hurlcon
• Diameter: Approx. 280mm
• Cross Section: 5mm
• Application: Cartridge filter lid seal
• Country of Origin: Australia

Frequently Asked Questions

How do I know if my filter lid O-ring needs replacing?
Common signs include water leaking from around the filter lid, the lid not sealing properly even when tightened, or a visible crack, flattening, or brittleness in the existing O-ring. O-rings typically need replacing every 2–5 years depending on chemical exposure and UV.

Is this the right O-ring for my Hurlcon ZX filter?
Part 78110 suits the ZX50, ZX75, ZX100, ZX150, ZX200, ZX250, and ZX310 cartridge filters, as well as the Smart 350, 450, and 550. If your model isn't listed, contact us with your filter model number and we'll confirm the correct part.

Should I use lubricant on the O-ring?
Yes — applying a small amount of silicone-based lubricant (not petroleum-based) to the O-ring before fitting helps it seat correctly, creates a better seal, and extends its service life. Avoid petroleum-based products like Vaseline as they degrade rubber.

Is this a genuine Astralpool part?
Yes — this is a genuine Astralpool Hurlcon replacement O-ring (part number 78110), manufactured in Australia.