I have some 70d buna x-rings (double seal o-ring) for sale if you want. I have done my b4 and sc10 and it has helped alot. My sc10 shocks used to leak terribly but now ive run them for about 6 weeks and had no leaking at all.
They are £6.00 for 20 posted which is alot better than the price of the kyosho rings or even ae standard rings.
Alex
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