Waterco Opal Cartridge Filter Lid O-Ring (620271) – 280mm

Genuine Waterco Opal Cartridge Filter Lid O-Ring — part no. 620271. This large rubber O-ring seals the lid to the filter tank on the Waterco Opal cartridge filter. A worn or cracked lid O-ring causes water to leak from around the filter lid. Replacing this O-ring restores a watertight seal.

Specifications

• Diameter: 280mm
• Thickness: 8.5mm
• Material: rubber

Product Details

• Brand: Waterco
• Part number / SKU: 620271
• Compatible with: Waterco Opal cartridge filter
• Genuine Waterco spare part

Frequently Asked Questions

How do I know if this O-ring needs replacing?

If water is leaking from around the filter lid when the pump is running, the lid O-ring is the most likely cause. Turn off the pump and relieve system pressure before removing the lid. Inspect the O-ring for cracks, flattening, or deformation. Even if the O-ring looks intact, replace it if it has been in service for several years or if any leak is present at the lid joint.

Does this suit other Waterco cartridge filters?

Part 620271 is designed for the Waterco Opal cartridge filter. Other Waterco cartridge filter models (such as the Trimline or Aquamite) use different lid O-rings. Check your filter model before ordering, or contact us to confirm compatibility.

Should I lubricate the O-ring when fitting it?

Yes — apply a small amount of silicone-based O-ring lubricant (not petroleum-based grease) to the O-ring before fitting. This helps the O-ring seat correctly in the lid groove and extends its service life. Do not use petroleum-based lubricants as these degrade rubber O-rings.