Roller Chain #40 From A Snow Blower With Gaskets.. Uncommon Roller Chain Differences

In this video, John shows a roller chain from a front mounted snow blower off the tractor that has a roller chain connecting link break. The original chain was a #40 but had seals or gaskets to keep out the water/snow/salt for a longer life on the blower. Common replacement roller chains do not have gaskets and the width is different from chain to chain.
Roller Chain #40 From A Snow Blower With Gaskets.. Uncommon Roller Chain Differences

[@DAUNTLESSHUGH]

Thanks for alerting me about the chain number on the side of the plate. I was about to do some tedious measuring!

[@lockeyestlocksmith2349]

Motorcycles been using O-ring chain for decades, it’s not that rare.