Work is progressing well on my newly acquired btas HW100.
To be fair to the previous owner, it’s in vgc and I’m happy with it.

Unfortunately it has sprung a small leak, but hey if you own a pcp long enough your going to have to deal with a leak or two.

I’ve tracked it down to the hw to fx adaptor.
I’ve changed the o ring on the hw block side but it seems as though the leak is coming from the fx cylinder to adaptor side.

Now here’s the bit I need help on. What is under the cylinder to adaptor side? Is there an o ring, a seal? Anyone ever come across this and had to change whatever it is?

It’s a small leak, I’ve charged to 200 bar on the gauge and leaving it overnight to see how much has escaped but I really don’t think it is a lot.

Any help on what I need to replace on the tube side would be hugely appreciated as I want to go out and play with it 😂

Kind Regards,
Rhys