Kevin

      I heated up the O ring in hot water and with a little Vaseline I slipped it over the hub. Its been a almost a year in the garage with no evident leaks.

             Rob M 

We used tyre mounting soap and held the ring off on the slope whilst we put it together - took 2 and a half people! Rings in place over one year with no issues - even with bush landings (see http://medicineonthemove.org/trailer.html and look at the 701 sequences).  Looks like there is more than one way to ring a hub!

Years ago, I was the first to reply to this post. In that post, I stated I used Vaseline on the O-ring and that it was still holding as time went on. Not long after that post, I continued to have consistent air leaks and put tubes in all of my tires. 13 years later, I’m still flying the plane and all is good. Have never had a flat, have replaced the main tires once due to wearing them out, and have over 1000 flight hours and 2700 + landings. With tubes, there is no guessing game as to whether they will hold air or not. Just my 2 cents on the topic.