I resealed my HPFP after it left me stranded because it was leaking so much that it wouldn't build enough pressure for the car to start. The kit I used is BOSCH F 01M 101 456 for about 25$. It's a DIY job if you are extremely clean with the process.
You can get more info from my post at:
https://www.ausjeepoffroad.com/forum...88#post1694988