Range of Natural Rubbers, Molding Systems, Tools & Supplies

As of the 31st of January 2020 F. E. Knight sold the Silicone Rubber, RTV Rubber and Injection Wax division of the business to Goodwin Refractory Services Ltd (GRS). This sale included the Castaldo brand name and trademarks.

F. E. Knight will continue to manufacture and sell its range of Castaldo branded Natural Rubber products and associated tools under our new Knight Jewelry Products banner.

Please note that this is now a standalone business entity from Castaldo and orders for Natural Rubber products and associated tools will now need directing to info@knightjewelryproducts.com.

Orders for Castaldo Silicone Rubber, RTV Rubber and Injection Wax products are to be as normal to be sent to Castaldo at info@castaldo.com. This domain and part of the business is now operated by Goodwin Refractory Services Ltd.