Hi, does anybody know the size of the O rings on the positive and negative air springs in 06- Rock Shox Reba Races?

I need to change mine as air is leaking between the two chambers and I don't want to spend £25 quid on a service kit when I just need two o rings.

Thanks for your help.

The postive chamber has just one seal – the negative two. The kit comes with 2 "outside" of the pistons seals and 1 internal (between the piston and the shaft) for the negative chamber. You also get circlips and other bits.

As accurate as I can get with steel rule(from a new set waiting to fit):

o/s diameter – 27.5mm
i/s diameter – 21.5
Height 3.25mm

Let us know if you manage to source them.

I've found some here http://www.altecweb.com/home.asp?cat=Subcategory8320a

they have some that measure 21.5 internal and 27.5 external but the cross section is only 3mm.

Has anyone here managed to use non rock shox o rings successfully?

If they are made in the States, there is a good chance there imperial sizes.
I just tried to replace some in my revs, and found them to be inbetween sizes from the boxfull of metric ones that I have.
Do Lidl or Aldi sell O rings in boxes sometimes?