Overclockers?
First thing I tried. There doesn't seem to be any info out there on this. Daft isn't it? Seems the only way to get the correct spare O-ring is to buy a new pump.Google it.
With a i9 and a 2080ti extreme I went for extreme cooling.Why so many rads?
Plenty of places to buy o rings....
https://www.polymax.co.uk/o-rings/rubber-nbr-oring/
https://simplybearings.co.uk/shop/Seals-O-Ring-Seals-NITRILE-O-Rings/c19_4501_4705/index.html
Theres two for a quick example. Remove the o ring from your DDC, measure and order from sites above
How important are heatsinks for DDC pumps? I ask as I have 2 that have been in my system for 10 - 15 years, neither have a heatsink and only one has had a fan blowing on it for the last six months or so. Not had an issue with either and both are still going strong.
EDIT - Just googled Laing DDC o ring size and multiple sites appeared listing a o ring to fit the DDC. Cant link them though as they are competitors.
I think with DDC pumps it's the luck of the draw. If you get a good one, it just keeps on trucking, get a bad one and it's end of life is 31 minutes. I have seen this kind of situation on YouTube quite often.Yeah I can understand wanting to prolong the life it's just I hear people saying you need a heatsink and air flow etc yet mine have both been running full pelt for 10 -15 years with neither and show no signs of giving up anytime soon. Maybe I've just been very lucky.