Q: What is the best water proof seal?
A:There is no true water proof seal for bearings. Bearing seals are primarily designed to retain the lubrication inside the bearing. Most bearing seals are considered water repellant and will keep moisture out of the internal components, but they will not prevent water from entering the bearing if it is submerged. If you require a bearing that can operate submerged in a liquid, SUNBEARING would suggest a ceramic hybrid or full ceramic bearing depending on the operating environment.
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