Yes, Hella made the condensers.
Repairing one (if you can identify the hole) can be done with epoxies. My own was holed and I used a product used in the HVAC industry to effect temporary repairs, followed by a stronger reinforcement. That was 2 years ago and my A/c still blows nice and cold.
The products are "LA-CO heat-seal stik" and "JB weld". Ebay will probably have them.
The Laco stick looks like green sealing wax. You heat the holed area and melt/puddle this stuff on. It hardens in less than a minute and gives a gas-tight high pressure seal. It really works well and will
seal a holed condenser.
Laco is very brittle though so you need to reinforce the repair.
Lighly sand/wire brush the Laco and then build up a sleeve of slow-curing jbweld over the laco. I didn't use any material like glass fibre or kevlar in the mix, but you could do that too. Give the repair 24 hours before reinstalling the condenser in the car.
Oh and btw, identifying the hole is done with a strong UV lamp in total darkness and the 24 LED types sold on ebay are perfect for the job.
This can be a good way to get yourself up and running again when the last of the replacement condensers has been sold.
94 XJ40 VDP
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