lefty, the TF series is much different than any AD ... and the rubber pieces are both sides of the core support with the 'metal collar' going thru both

Bill

Moved over to the Passing Lane

"When we tug a single thing in nature, we find it attached to the rest of the world" ~ John Muir
"When we tug a single thing on an old truck, we find it falls off" ~ me
Some TF series details & TF heater pics