Mikrosil Catalyst, 25g $14.75 Variant default-title Quantity Model4-1010 SKU1005714 Add to cart Share This Share on Facebook Share on Twitter Share on LinkedIn Email In Stock. Ships within 14 days. Special order items may take longer. Mikrosil Catalyst, 25g The Mikrosil™ Catalyst is a component of the Mikrosil™ Casting Putty Kit and is also sold separately in .875oz (25g). Reviews