Thordon Extending Seal Life in Tough Mining Environments Thordon Bearings, a Canadian manufacturer known for its award-winning water- lubricated non-polluting marine shaft bearings and seals, is gaining considerable traction in the global mining sector with its Thor-Flex seal in pneumatic cylinder applications. One recent success story is the replacement of conventional rubber seals on 28 pneumatic cylinders which had been sent for refurbishment to RMH Industries, Thordon’s authorized distributor in Quebec, Canada. The cylinders are used for unloading mining dump wagons. Typically, each wagon is equipped with two pneumatic air cylinders on each side. In this application, the cylinders operate at a pressure of 861 kPa (125 psi), under highly abrasiveconditions. Each cylinder relies on two s

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