Can I buy just one side of Alumilite or just catalyst for the rubber? Monica P. February 12, 2020 17:33 Updated Yes. We typically stock extra catalysts for the silicone however if it is not in stock, expect a lead time of 5-10 days. Related articles Do you ship your products internationally? Can food coloring be used to color Alumilite casting resins? How many parts will I get per mold before the mold starts to break down? My High Strength Silicone does not appear to be curing very quickly and is tacky, what can I do? Comments 0 comments Article is closed for comments.