Yes, the o-rings for Code 61 and 62 are the interchangeable between flanges of the same size.
3000 psi flanges correspond to Code 61 flanges, 6000 psi flanges correspond to Code 62 flanges. You can use the FlangeLock™ Tool that works for your size flange and the appropriate code.
No, the FlangeLock™ Tool is designed to handle thermal expansion but not system pressure.
We ship our FlangeLock™ Tools through UPS, but will ship on other carriers through the customer’s account.