Stainless steel bearings will also rust too, if you don't protect the bearings well .

The most rust proof material is SS316 stainless steel ,if you want to use bearings under water or in wet environment ,you can choose SS316 stainless steel bearings or ceramic bearing or plastic bearings .

Below here is stainless steel material for your reference :

For bearings parts we will choose different SS material:

The chemical composition of stainless steel bearings

The stainless steel bearing code from different countries :

MKL BEARINGS can produce different stand stainless steel bearings ,Customized stainless steel bearings ,Non-standard stainless steel bearings ,welcome with your enquiry ,we can produce according to your drawing or sample .