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The tub seal sits between the inner drum shaft and outer tub. When it cracks or wears, water escapes through the rear tub during wash and spin cycles, pooling beneath the machine.
A failed tub seal allows water to contaminate the drum bearings. Once the bearing grease is washed away, metal-on-metal contact creates loud grinding or rumbling sounds at high spin speeds.
Bearing wear caused by seal failure throws the drum off-balance, resulting in violent vibration, banging, and the machine moving across the floor during the spin cycle.
Mineral deposits and rust streaks appearing around the outer tub seam indicate long-term water seepage past a deteriorated tub seal.
💡 Pro Tip: How to Know Your Tub Seal Has Failed
Your part is likely the culprit if you notice any of the following:
⚠️ Water pooling on the floor directly beneath the washer after a spin cycle
⚠️ Loud rumbling or grinding noise during spin — often signals bearing damage caused by a leaking seal
⚠️ Washer shaking or walking excessively during high-speed spin
⚠️ Visible rust streaks or mineral deposits around the rear outer tub seam
🛠️ Technician's Note: When this seal fails, water migrates into the tub bearings (4280FR4048C small / 4280FR4048K large), accelerating their wear rapidly. Always inspect the bearings when replacing this seal — replacing both at the same time avoids a costly second disassembly within months.
📦 What's in the Box
✅ 1× Rear Drum Tub Seal (4036ER2003A) — double-lip fluororubber / steel-plate construction, pre-lubricated
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Disclaimer: Compatibility information, part numbers, and model fitment data on this page are sourced from manufacturer databases and third-party references. While we strive for accuracy, please verify your appliance model number before ordering. Heima is not responsible for errors or omissions in compatibility listings.
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