Sea & Sea YS-250 circular light tube

Although the once on my strobes are still working, I am eager to get a spare set.
Can anybody advise on where one can buy them?

Thanks

Geo

I have 2 ys-250 strobes that warm up test fire (so tubes are fine) they just won't optic al or electrical trigger for some reason never flooded, so I have been holding onto them for parts. But I have 4 fully functioning ys 250 strobe heads and don't use them as much as my inons these days. I would be willing to sell them if you are interested.

Surely there must be some data available on where these tubes can be bought?

Manufacturer may be sole sourcing to S&S on a direct purchase. If so, there will be no open market available. Did you try to get from S & S?.