Q: Double O-Rings - Best Sources

[Citroënbender]

I've got to go through the Sydney 147's AC as a priority, need to stock up on the double o-rings beforehand.

Which (sort-of) local FCA or indie supplier is best at present for these?

[bazzbazz]

You's be better off looking at A/C specialists to source them from.

[Citroënbender]

I'd done my homework in advance. 

Highgate - nope. 
Ashdown - nope.
Würth - nope.

Who have I missed?

[bazzbazz]

Buy a bulk kit of A/C specific O rings from eBay?

[Citroënbender]

Yes, I found the Romanian bloke in France selling sets of one each size (three rings), not ideal as the size mix ratio is off.

I can make up twenty-five "kits" of three small, two medium, two large OEM seals ex-Poland for $230-odd including courier, so about $9/car on my doormat.  It's tempting.

[bazzbazz]

Just which O rings are you after ?

[Citroënbender]

I've got to replace the hardlines from the firewall, splice in a new flex portion where the radiator shroud has chafed it, replace towbar-damaged condenser, fit a new drier and finally, renew the displacement modulation valve in the compressor. So, pretty much all the double O-rings from the windscreen forward plus the compressor pad seals - not a fan of re-using when they've got a few years and heat cycles through them.