The difference is material of O-ring.
JR13WCCA-4(31) : NBR(Nitrile rubber)
JR13WCCA-4(72) : Silicone rubber
JR13WCCA-4(31) : NBR(Nitrile rubber)
JR13WCCA-4(72) : Silicone rubber
Was this article helpful?
That’s Great!
Thank you for your feedback
Sorry! We couldn't be helpful
Thank you for your feedback
Feedback sent
We appreciate your effort and will try to fix the article