Detailed Product Description rubber bearings 1,American owned and operated company American engineering&quality standard Lowest possible price 2, Material Available: NR,NBR,EPDM,SBR,SR,CR,BUNA,Fluorocarbon,EPR,Nitrile,Fabric,thermoplastic rubber,Nylon rings......3, We have developed over 1000 compounds. Any speical compound is available upon your request.4, OEM parts are very welcome