Just to follow up. The «silicone potting thermally conductive chinese ali glue» seems to be functional and allows for reversible pottings. They do not specify hardness so it’s normally not for mechanically demanding applications. Silicone in general has decent thermal transport. On the other hand the urethane polymers like Simpact 85A emits a lot of heat when curing so I would not use that kind for anything heat sensitive like battery packs. A small batch tested reached around 55-60 deg C. I would like to point out that if you forget to premix each of the A or B components individually before messuring up and mixing a batch, it might never harden…
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