... requirements, including printing the client`s logo on the bearing shield and making customized packaging and non-standard sizes ... Seals There are 3 types of Seals for the skateboard longboard bearing, Metal Shield, Rubber Seals and Teflon Seals. Customers can ... . And there are also special kinds like chromium bearing and blackened bearing. 6,LubricationMost our clients employ grease lubrication, for ...