"Operation Air Tight" Steering column seal

[Clifton]

Ok, it will never be air tight but...

This is what I did for the steering, brake, and clutch. I use Ace Hardware 1.5" x 1/16" neoprene washers. The two plates make adjusting the washer easy. The firewall plate side has 1/8" think foam tape. I used U nuts so I can finally not strip the holes or have loose panel pins. Lotus kind of hacked the hole making the plate larger but it works. 

[Footer]

Nicely done

[jbcollier]

https://sealsit.com/product/split-grommet-seal-2-piece/

[Dilkris]

Nicely done

  Very tidy. 

[Clifton]

https://sealsit.com/product/split-grommet-seal-2-piece/

I bought a 3" OD seals-it. It wouldn't cover the butcher hole and it lacks any adjustment.

[jbcollier]

They also have 4” OD and blank.

What you have done looks great.  Just pointing out other available options.

[Clifton]

I saw the 4" blank and they have a cones too. I spent all the time looking for something that had some room for error.  The seals-it are better for running wire, hoses though. If I am off an 1/8" on my mounting holes with a seals-it, it will have some strain as it's not centered. My way, I can be off but still locate the seal dead center before tightening and sandwiching it. I bought 2 Vintage Air Grommets too. $40 shipped for all 3  that I won't use 

I found this guy too but the lack of hole ID specs was a deal killer.
https://jjsrods.com/

[TurboFource]

I just used another left over piece of closed cell neoprene foam…