Ventilation is needed and some people may get eczema skin reactions. It releases oximes and usually also methyl alcohol as it sets. Oxime cure is the cheaper and most common NCSR. There are a number of other NCSRs but you will almost certainly not meet them. There are 2 main types of neutral cure SR (= NCSR) in common use. if they do not say this or similar they will be acid cure. Neutral cure SRs will always say "neutral cure" or similar on the container. Do not use "acid cure" silicone rubber for electronics. If it smells like vinegar then it's acid cure. You can buy acid cure SR which exudes acetic acid as it sets.
It is not essential to use an electronics grade SR - these are usually dearer and may have Mil Spec ratings which are not essential.įor electronics and anything liable to be corroded you MUST use "neutral cure" SR. SR is a good to excellent encapsulant that has limitations (as does everything). The best generic term is "Silicone Rubber".
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