Red Hi-Temp RTV Silicone

3 ounce tube of Red RTV Hi-Temp Silicone. This silicone can withstand the high temperatures of an autoclave or pressure cooker. It is self-healing, meaning that it will naturally form an airtight seal after being punctured with a needle. It is often used to make self-healing injection sites in spawn jar lids and to attach 29 mm filter discs atop of gas exchange holes on custom spawn lids.

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