APE manual-tensioner O-ring seals...

There are two O-rings required to seal APE cam-chain tensioners on (1000 and 1100) J-motors, and both are bad on mine. Does anyone know specifically what sizes are needed, and/or where to get them?

A metric o-ring kit will probably have the needed size or close enough. Nitrile or viton rubber.
I have a Harbor Freight kit --- similar kits can be found on eebbaayy.
Some auto parts stores sell individual o-rings from the kits.

martin_csr wrote: A metric o-ring kit will probably have the needed size or close enough. Nitrile or viton rubber.
I have a Harbor Freight kit --- similar kits can be found on eebbaayy.
Some auto parts stores sell individual o-rings from the kits.

I'm hopeful APE will have them available, and will check there. I'm surprised at the knock-offs on ebay...

If you can order from McMaster Car, get the Viton O-Rings. I have been using them on all of my bike's needs with great success, including the engine side oil passages.