I recently purchased a high-quality sealed bearing from the Power Transmission Products category. Through trial and error, I found that this product outperforms other options in the market. The PGN 6003 2RS bearing is designed to last long and perform the operations in the Industrial and Scientific settings. The seal on this product is strong and prevents any type of debris and dust from entering which cannot be removed once entered. If you're seeking reliable ball bearings, I highly recommend the PGN 6003 2RS.