o ring vs x ring chain

[b4thenite]

Let's hear it, gentlemen. Tell us your experiences. What made you go with certain types. Whar are adv/disadv. Thank you.
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[Professor]

O-ring
cheaper

X-Ring
has two sealing surfaces/edges instead of one
Less tension required on the seal so less power loss in the chain itself
resists dirt/water entry by design

[Professor]

Here you go

EK Motorcycle & ATV Chain

X-Ring