Review on GM Genuine Parts 25518260 Versatile Seal by Draven Invert

I have a '91 Chevy K2500 with a TH700R4 transmission that had a gear lube leak. It seemed to leak after changing the transmission filter and fluid, so I took it for granted that the transmission pan gasket was leaking; I changed the gasket but the leak is still there. I took a closer look at the transmission and found that the throttle cable (TB) gasket was leaking. I ordered this part from Revain and replaced it and no more leaks, it was a direct replacement for my truck. When replacing the seal, I also replaced the TV cable.