Product review (5 stars): but zip ties are pretty much free and we had this seal installed in ...
Waited a while to post a review, but this seal has worked perfectly so far after about 5 months.  Install was difficult until my wife and I found a you tube video where they used zip ties to help compress the springs.  There were other similar type suggestions, but zip ties are pretty much free and we had this seal installed in less than 10 minutes using that technique.  It has worked perfectly since then with no leaks.  I am hoping this boot seal lasts for several years, but if it doesn't, I feel comfortable doing another replacement myself.