Rebuilding heater box, replace core?
With the new backing, I made a coupple bend lines so it would fit tighter to the box.
With the rope caulk. I tooled that down. Maybe if the box is warped, thicker would be better in certain spots. But this box fits pretty tight.
When installing the tube seal on the box, do trial as the tubes on replacement cores are not always perfectly positioned.
Then probe for where the screw is. A screw will go through the foam, although punching it clean (on the bench) will keep the screw from grabbing the seal.
With the new backing, I made a coupple bend lines so it would fit tighter to the box.
With the rope caulk. I tooled that down. Maybe if the box is warped, thicker would be better in certain spots. But this box fits pretty tight.
When installing the tube seal on the box, do trial as the tubes on replacement cores are not always perfectly positioned.
Then probe for where the screw is. A screw will go through the foam, although punching it clean (on the bench) will keep the screw from grabbing the seal.