The tape is EMI shielding not heat. Finding the die-cut part is very hard.
The solution is to patch up what you have. I use this tape to patch things up [https://www.amazon.com/Adhesive-Conductive-Shielding-Connections-Grounding/dp/B0B7DX76W7/ref=asc_df_B0B7DX76W7/?|Conductive Copper Tape 100% Pure Double Sided Adhesive Copper Foil Tape for Stained Glass, Guitars, EMI Shielding, Electric Connections, Repairs, Grounding, Crafts (1inch x 66FT)]