Delta operates Seattle/Shanghai with a 767-300 - 4967 NM.
But they have a large business class and no where near 296 seats.
BTW, the installed fuel burn of the RB211-524G/H was significantly worse on the 767 relative to Pratt and GE. That's a big reason only 40 were built (again, it's never been clear to me why the RB211 worked better on the 747-400 than 767, although installed weight (not dry weight) was often mentioned as a problem).