Thread: D1 300tdi oil cooler pipe 'O' rings

I'm pretty sure I have the correct one in my hot little hand and it measures 7/16"ID, 9/16"OD, section 1/16"

Material.
IMO it's better to have Viton or flurocarbon to handle the temps as Nitrile really has an upper limit of 135*C according to my book. (although I haven't seen an oil temp above 110*C yet, it's still only cool and I've only been logging temps a few weeks)

Hopefully Tombie will drop in as this is his territory.

Thanks Rick.
I dropped into the local bearing shop at lunchtime today and picked up some high temp ones - Viton rings a bell - they are a slightly red/brown colour not black.
The sales guy seemed quite switched on - I gave him the pipe dimensions and he came up with an O ring to suit. I'll check the dimensions against yours to be sure.

rick130,

Is that section measurement a radius? if diameter then we have lost 1/16 between ID and OD.

Seems to add up to me. 7/16 + 2x 1/16 = 9/16

Steve

So it does. I work much better with pictures

Originally Posted by slug_burner

rick130,

Is that section measurement a radius? if diameter then we have lost 1/16 between ID and OD.

nope.
7/16 + 1/16 + 1/16 = 9/16