Sealed spherical roller bearing with two rows of rollers , sealed with contact seals on both sides , the features is to reduce maintenance costs , increase working life ,save grease and protect the environment .2CS=2RS means NBR seal. Besides,we can also provide HNBR seal,FKM seal. Our 23134-2CSK bearing design structure is the same as SKF 23134-2CS5K/VT143 , as per your requirement , we can change bearing seals and structure and Lubricant filling to Customization production.