Hi all,

I have temporarily patched up my OM606 powered E300 using a few spare O rings on the pre filter - the rest of the system is air tight it was just the O ring on the Pre filter.

Apparently you can't buy the O ring separately? Does anyone have the spec of the O ring size so I can find a better replacement than the 2 smaller O rings I am currently using?

Thanks in advance!

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UK spec Mercedes W210 E300 Turbodiesel wagon - OM606.962 with 722.6 transmission - rust free!

There are suggestions about buying a ' variety pack' in the archives..... and discussions about the type of rubber they need to be made of for various purposes....

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1980 240d ,

chain elongation, cam marks reference:
http://www.peachparts.com/shopforum/diesel-discussion/10414-help-i-need-check-stretch.html

http://www.peachparts.com/shopforum/diesel-discussion/305365-9-degrees-chain-stretch.html

evap fin cleaning:

http://www.peachparts.com/shopforum/diesel-discussion/156207-photo-step-step-post-showing-w123-evaporator-removal-1983-240d-1982-300td.html?highlight=evaporator

A/C thread

http://www.peachparts.com/shopforum/diesel-discussion/297462-c-recommendations-mb-vehicles.html

One 2.5mm by 8mm id and one 3mm by 18mm id

Thanks for that, I have a full set of O rings but didn't know the correct size I needed, think I stacked up 2 O rings which sealed ok. I have found that all of the other seals are perfect with no air leaks, its just the O ring around the prefilter which had a leak.

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UK spec Mercedes W210 E300 Turbodiesel wagon - OM606.962 with 722.6 transmission - rust free!

Most of the sets of 'o' rings are only 2mm, which let air in hence stacking the two together forced a tight fit.

Go Viton rather than buna rubber, will last longer.

The small oring comes with the pre-filter, the large one is available separately from MB dealers.

Search my name and "606.962 orings", I've posted all of the sizes and counts previously.

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Terry Allison
N. Calif. & Boca Chica, Panama

09' E320 Bluetec 77k (USA)
09' Hyundai Santa Fe Diesel 48k (S.A.)

Thanks for that, yeah I know that the sets of O rings aren't ideal but its getting me to work and back with no issues so far, I also added a bit of black high temp silicon as a temporary fix as well to ensure its air tight until I get the correct O rings.

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UK spec Mercedes W210 E300 Turbodiesel wagon - OM606.962 with 722.6 transmission - rust free!