E3D V5 Silicone Sock Mold - Easy to crack open shell

by spikelee May 3, 2018
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Any recommendations for a silicone that works well?

I'm thinking of trying Permatex 81878 Ultra Copper Maximum Temperature RTV Silicone. It's available at my local O'Reilly, Amazon, and a few other usual places. It goes up to 700 degrees F (about 371 degrees C) intermittently. I'm hoping that it can handle 500 degrees F during prints. If anyone finds a silicone that can handle even higher heat, please share.

RTV silicone used on engine sealing.