hello,
who has experience with these O-rings?
they are supposed to hold the stem in place snuggly.
Lots of folks have tried them, all totaled I sent out close to 100 sets in my personal '4/20 celebration a few years back. Based on the success of the idea, some Dealers started offering them so LOTS of folks have used them I think?
They can add restriction since normally air leaks past the seal, so I 'notch' them typically this way:
Pinching them makes the cord bulge out which I cut off with a razor blade. Sometimes I put the notices 'on the bottom' of the ring, not the inside. They still grip this way but don't change the draw restriction.
And no, they are not 'to hold the stem in place', if you check back you'll see the goal was to stop the bent stem from rotating. The maker says loose stems are part of the design, it's not a handle.
OF
Edit: It's also worth mentioning that while there was only one body when the idea was developed (therefore all rings fit fine) that has changed over time. There are basically two thicknesses of caps out there:
This means you have to 'fit' the ring carefully or (if it's too snug) you can break the tabs on the bottom of the unit that holds the chassis in place (you basically push the works out the bottom). There are two thicknesses of ring to try (sorry, I don't have the numbers handy) and in some cases you have to sand the ring down a bit. In no case put more than maybe 1/8 turn on the cap past solid contact. Guys seem inclined to gronk down on the cap to bulge the ring to 'really grip the stem'.......the long term results are poor. Pipes can sell you a kit of parts to repair the broken tabs on the base should you go this way. The idea is the ring grips the stem on it's own tight enough to stop rotation and the cap grips the ring against the top of the oven tight enough so it doesn't rotate......no more.
Take is slowly and understand what's going on is my advice. "I got it off the web" is likely to fail you here. There's a reason Arizer didn't include this in their design I think?
OF