Upon first glance if you had to choose one solely based on visual durability the o ring chain fits the bill.
What does an o ring chain look like.
First the o ring chain consists of o shaped rubber fittings o rings placed in between each link of the chain.
Chain manufacturers began to include this feature in 1971 after the application was invented by joseph montano while working for whitney chain of hartford connecticut.
The o ring chain looks beefier and feels quite a bit heavier too.
It uses x ring seal to keep lubricant usually grease in place.
They look like this.
The o ring chain is named for the rubber o rings built into the space between the outside link plate and the inside roller link plates.
The x ring type chains are more modern chains with x shaped rubber ring placed in between the chain plates to seal the grease filled inside the chain components.
Like the standard o ring chains it is also used in high performance motorcycles.
You can use either the o ring chain or not o ring chain for our bike is around 65 at my local shop you need to change your sprockets as well as the chain they must ware together or the chain will ware out much quicker.
The x ring chain is a specialized type of sealed roller chain used to transfer mechanical power.
The o rings actually somewhat self lubricating rubber inserts that fit in between the outside link plates and inside roller link plates seal in lubrication and seal out.
As upon pressing these type of rings come in contact with lesser surface area and hence less drag coefficient is generated with same efficient sealing property as o ring chains provide.