Originally Posted by
Grizzly
I have dealt with the Donut's before, Grasso use them as well.
But yes, you are correct the coupling is a bitch!
The s/seal should of been straightforward only on a previous install, someone had miss-aligned the labyrinth seal assembly (very similar to a Howden WRV!)
Causing wear that meant the whole assembly would not align correctly.
With new parts the whole thing slid together nicely.
On this one the real pain was balancing, straddled across the drive motor 7 to 8 feet in the air whilst bent over the drive coupling etc. Is it a relief when you finish!
It would seem samsom does not really require any assistance after all!
The new photo being clearer, looks more like some form of gel than rubber to me?
Could it be "waxed" oil?
Grizzly