Seals for Submerged Hydraulic Cylinders

[ADAG]

Hi,
I need information on seals for hydraulic cylinders working underwater. The application is the hydraulic drive of a couple of miter gates working in a lock. These cylinders worked above water level but now will be submerged aprox. 1 foot plus they will be exposed to pressure spikes and vacuum inside the cylinder produced by the huge inertia of the miter gate.
Any suggestions?

 

[EdDanzer]

We have built cylinders to operate under water. The best thing to do is add a seal just to keep the water out. This seal should be rubber and be behind the rod scraper. Adding a drain between the two seal and venting to a container will tell you when there is a seal breach and it is time to reseal.