Nilo / Lisboa lid flange O-ring – 255 × 4 mm
Catalogue size 255 × 4 mm; EPDM 65; 1 piece
This O-ring seals the flange-to-tank joint at the top of the filter. It replaces a hardened, flattened or damaged seal at the matching catalogue position.
Catalogue code: IFS7222550040.
Pool specialist’s advice
Do not confuse this with top lid seal IFS16660-0402, which has a 209 mm internal diameter and a 6 mm section. The 255 × 4 mm size is the manufacturer’s catalogue designation.
Nilo / Lisboa lid flange O-ring – 255 × 4 mm
This O-ring seals the flange-to-tank joint at the top of the filter. It replaces a hardened, flattened or damaged seal at the matching catalogue position.
What is included
One flange O-ring. Flange and top lid are not included.
Selection details
Catalogue size 255 × 4 mm; EPDM 65; 1 piece
Catalogue reference: IFS7222550040
Identifying the correct part
Do not confuse this with top lid seal IFS16660-0402, which has a 209 mm internal diameter and a 6 mm section. The 255 × 4 mm size is the manufacturer’s catalogue designation.
If you are unsure about the version, send us a photograph of the original part and the filter label. Matching the actual design is more reliable than using the range name alone.
Replacement and checks
Before dismantling, switch off the pump, prevent it from starting and release filter pressure as instructed in the filter manual. Open the joint only after depressurising. Clean the seating surfaces and inspect adjacent parts; a new seal will not repair a damaged thread or cracked body.
Follow the instructions for your particular tank during fitting. After assembly, bleed the filter and check the repaired joint for leaks when restarting. Do not overtighten plastic components.
Where to find the part
The blue arrow on the original exploded view marks the component. The drawing is a reference guide; package contents are stated above.
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