The rubber door gasket on a refrigerator is frequently overlooked in cleaning — it collects food residue, condensation, and mould in its folds. A dirty gasket reduces the seal's effectiveness, increasing energy use and potentially allowing temperature fluctuations.
Cleaning the Gasket
- Pull back the rubber folds of the gasket to expose the inner surface — food particles and mould collect in the recessed areas
- Mix a solution of warm water and a small amount of dish soap
- Use a small brush (a toothbrush works well) dipped in the soapy water to scrub the folds and inner channels
- Wipe out all surfaces with a clean damp cloth
- For black mould spots: apply a cloth dampened with white vinegar, let sit 5 minutes, scrub, wipe clean
- Dry thoroughly with a clean cloth
Do not use bleach on rubber gaskets — it degrades the rubber over time and shortens its lifespan.
Conditioning the Gasket
After cleaning, applying a thin layer of petroleum jelly (Vaseline) to the gasket surfaces keeps the rubber supple, helps it maintain an effective seal, and makes the door open more smoothly. Use a cloth to apply a very thin coat.
How Often
Every 1–3 months, or whenever you notice visible grime in the folds. If the gasket has black mould spots that return quickly after cleaning, the seal may no longer be air-tight — increasing the humidity at that point and promoting continued mould growth.
Testing the Seal
Close the door on a piece of paper — you should feel resistance when pulling it out. If it slides out freely with no resistance, the gasket seal has failed. A failing gasket should be replaced — most refrigerator gaskets are available as manufacturer or aftermarket replacements and can be replaced DIY without tools.
Tips
- Wipe the gasket area quickly whenever you clean spills inside the fridge — residue at the door edge ends up in the gasket folds
- The same approach applies to the freezer door gasket — check and clean both