How in all that is holy is this small piece of rubber $5?!?!?! I completely understand that it is indeed small and intricate....but I am sure Blichmann is having these things mass injection molded n such. I love all of the things that I've bought from Blichmann Engineering (therminator, beer gun)....and I know that they charge a premium for their premium products....but replacement parts like this costing this much? That makes me sad. But...I'll be buying this because I have no other option. And because it is absolutely critical to the operation of the beer gun.