...11mm diameter to fit snuggly in Place Diverter and Berkeley cable grommets unlike the 9mm diameter Teleflex cables....
I don't know about these guys but the boats we work on don't use the metric system

I rarely have a problem getting the forward/reverse packing to seal on Teleflex when using a new replacement seal, but we've devised a new seal assembly to eliminate the awkward OE assembly (much easier to install), I'm gonna make some more tomorrow I'll see if I can get a pic up (they look cool too). As far as getting the PD cable seal to seal with a Teleflex, It's usually as simple as repacing the rubber grommet with the seal you would use on the OE f/r packer, works like a charm (the rounded flange makes the edges of the gromet pinch in). I made a 33c cable seal through a PD seal doing that the other day