At 09:57 PM 5/29/2011, Rocket J Squirrel wrote:
>Found I needed to wrap the bolts with a buttload of TFE tape to create a
>decent seal. Jury-rigged, would like better solution to plugging unused
>coolant hoses that formerly went to auto trans ATF cooler.

Try a piece of hardwood dowel.  Put two or three small pan-head
screws around the perimeter so it can't crawl back out past the clamp
- this fitting needs an internal lip just as much as any of the other
hose fittings in the system.

If it's the right size, copper plumbing with the end capped or
crimped and soldered, and a wire soldered around the inner end for a lip.

If you know someone with a lathe, turn a piece of Corian or whatever.

Get a properly sized bolt long enough to have a smooth section.  Cut
off the threaded part and solder a wire around the end for a lip (the
steel will have to be very very clean, freshly sanded and tinned beforehand).

Yrs,
d