...then you know how often the belts break. At $2.99 each to replace, it adds up, and it's frustrating!
Go to
http://www.oringwarehouse.com/, and order the size -342 70-durometer Nitrile O-rings.
Yes, you are seeing the price correctly; they are twelve cents each. The minimum order is five dollars - yes, that's 42 O-rings - and shipping is around nine, so for $14 you will end up with a lifetime supply of replacement belts.
And these don't break often, at all.
You're welcome.