Waterco Trimline MkII Cartridge Filter Tank Lid O-Ring (62021)

Genuine Waterco Trimline MkII Cartridge Filter Tank Lid O-Ring — part no. 62021. This large rubber O-ring seals the tank lid to the filter body on the Waterco Trimline MkII cartridge filter. A worn or cracked lid O-ring causes water to leak from around the tank lid. Replacing this O-ring restores a watertight seal and stops the leak.

Compatibility

• Waterco Trimline Cartridge Filter — MkII models

Product Details

• Brand: Waterco
• Part number / SKU: 62021
• Barcode: 9314800020924
• Material: rubber
• Genuine Waterco spare part

Frequently Asked Questions

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

If water is leaking from around the tank lid on your Waterco Trimline MkII cartridge filter, the lid O-ring is the most likely cause. Turn off the pump and relieve system pressure, then remove the tank lid and inspect the O-ring for cracks, flattening, or deformation. Even if the O-ring looks intact, if it has been in service for several years it may have lost its elasticity and should be replaced during routine filter servicing.

Does this suit the original Trimline (MkI) as well as the MkII?

Part 62021 is specified for the Trimline MkII. The original Trimline (MkI) may use a different O-ring. If you are unsure which version of the Trimline filter you have, check the model label on the filter body or contact us before ordering.

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, prevents pinching, and extends its service life.