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George Miller · 07-27-2014, 08:27 AM

I started working in a hydraulic cylinder plant in 1962. Retired form one where we made up to 24' bore cylinders. A lip seal needs a 15 finish where the lip of the seal rides, like on the pulley hub to last. That is like glass. No lip seal is going to last on that rough surface.

Stick to the rope seal, they used them in a lot of engine up into the 70ts.
Of course they have to be installed correctly. Do not soak. use grease on the seal surface after it is installed.

07-27-2014, 08:27 AM	#9
George Miller Senior Member Join Date: May 2010 Location: NC Posts: 2,975	Re: Modern front seal I started working in a hydraulic cylinder plant in 1962. Retired form one where we made up to 24' bore cylinders. A lip seal needs a 15 finish where the lip of the seal rides, like on the pulley hub to last. That is like glass. No lip seal is going to last on that rough surface. Stick to the rope seal, they used them in a lot of engine up into the 70ts. Of course they have to be installed correctly. Do not soak. use grease on the seal surface after it is installed.