... of two kinds of structure, we have dustproof sealing device, discharging end with cleaning device, the low ... not for material have pollution or oil, where sealing effect is good, condole axletree lifespan, conveying material ... ).M2 -- for sliding bearing, a dustproof hang sealing devices, are commonly used in conveying material temperature ... materials. Flexible Screw Conveyor-Henan Qiangyuan, Hot Sale