Home Our Products Your Industry Contact Us INDUSTRY INVESTMENT CASTING SHELL MAKING Shell Making Capital Refractories manufacture and supply shell repair materials with the Shellseal name. These are Shellseal 213, a zircon enriched material, and Shellseal A1 which is a high alumina, zircon-free material. Both have a controlled fast set time. Product AI2O3 SiO2 ZrO2 + HfO2 Fe2O3 MgO P2O5 Shellseal 213 11.1 39 29.7 0.5 8.9 6.9 Shellseal A1 78.6 0.1 - <0.1 11.7 5.7 Brochure Download For all the latest information about our products and services you can view or download any one of our brochures. Please click the link below. Download Make an Enquiry For any questions or for more information, please contact us on the link below. We will get back to you as soon as possible. Contact us Have Your Say We’d love to hear your feedback about our website and our products. Click here to get in touch © 2021 Capital Refractories Limited Privacy and Cookie PolicyConditions of SupplyGeneral Conditions of Purchase UK Headquarters, Capital Refractories Limited, Station Road, Clowne, Chesterfield, S43 4AB, UK Tel: +44 (0) 1246 811163 Important Cookie Information. This site uses cookies to give you the best possible experience. By continuing to use the site you agree that we can save cookies on your device. Cookies are small text files placed on your device that remember your preferences and some details of your visit. Our cookies don’t collect personal information. For more information and details of how to disable cookies please read our updated privacy and cookie policy. Privacy and cookie policy I accept