Edit: Datasheet was removed.
We have some kapton heaters, I found them in a draw when cleaning. These should be useful for our new shield temperature control.
These are from the kit KH-KIT-EFH-15001. I don't know how old they are or if Kapton stickiness goes off, but here is a list of remaining available sick on resistive heaters and their Ohmage:
Data sheet is attached. Note that heating ranges from 3-8 W per square inch at the 12 V supply level for various different choices of shape and wire pattern.