You have successfully added from to your part list.
Dow SILASTIC™ RTV 4130-J Curing Agent for use with SILASTIC™ RTV Base Rubber products. SILASTIC™ J RTV Silicone Rubber is a two component, silicone rubber that has good cut-growth resistance, low shrinkage, easy release, long mold life, highly detailed reproductions and simplified handling. Curing agent only. 400 g Bottle.