... nozzle,tile,o-ring,seal face,guide bush/shaft sleeve/wear parts/mechanical bus,shaft systerm material We are specialized in sintered ... /RBSIC 1.M7N,59U WB2...standard parts2.Mechanical Seal faces,shaft bush/sleeve,wearing bush, and other nonstandard parts for pumps3 ... as I received it next day. Silicon Carbide (SSIC/RBSIC)Worm Shaft Systerm Material