Inner Cup for SF-CC15/20

I had been looking for this exact part for weeks; the threading is perfectly precise and it twists right into place without any wobble. My old one was getting worn, and this replacement fits the bottle like new again.

The stainless steel feels solid and the threading matches the original perfectly, so the lid screws on without any wobble. It took me maybe 30 seconds to swap out the old, worn cup.

The replacement inner cup slides in without any fiddling and the threads line up perfectly with the lid. My coffee stays hot for hours again, just like when the bottle was new.