Ultraseal,
 
I have used your Xhd sealant for a number of years in my tree farm equipment.  I have a great number of Honey Locust trees (thorn trees with 4 inch thorns) that are totally foiled by the use of Ultraseal in my tractor, mower and ATV.
 
Just today I was using my John Deere tractor with Bush Hog(registered) and ran over an antler shed by the local white tail deer.  Before I could get stopped the antler had penetrated the middle of the tread on the 11.2 X 24 front tire.  The penetration was about  2 inches and one half inch diameter! 
 
I could not leave the antler in the tire and I was over half mile from the barn.  I pulled the antler and the air really started coming out of the tire.  I quickly jumped on the tractor and determined to go as far as possible toward the barn.  I sure did not want to walk the half mile.
 
I could hardly believe that I made it all the way.  The tire carries 24 PSI and I checked and it had 11 PSI still in it and the leak had stopped!  I inflated the tire to its normal 24 PSI and completed over 2 hours of operation.  A recheck showed the tire at 23 psi and seemingly OK.
 
I have digital photos of the tire and the antler if you are interested.
 
With this large of a hole I probably should have the tire repaired but I thought you should know how much I appreciated the Utlra Seal.  This was far beyond what I expected.
 
Woody Barton
 
W. W. Barton
Barton Tree Farm