Cabot Supermetals Extends Long-term Sales Agreement with KEMET

September 7, 2004
Boston, MA -- (September 7, 2004) -- Cabot Supermetals, a division of Cabot Corporation (NYSE:CBT), announced today that it has reached an agreement with KEMET Corporation (NYSE:KEM), to amend its current contract for the supply of capacitor grade tantalum powders, and to extend it through 2009.

Carol Flack, Vice President and General Manager, Supermetals, Cabot, said, "This contract continues our long-term relationship with KEMET, one of the leading passive component manufacturers in the electronics industry. The revised agreement provides Cabot a significant supply relationship with its valued customer, and ensures KEMET a reliable, high-quality, diversified source of tantalum powder for the manufacture of tantalum capacitors."

About Cabot Supermetals

Cabot Supermetals is a leader in the technology and production of tantalum for the electronics, aerospace, defense, and chemical processing industries.

Cabot Supermetals is ISO 9001 certified with manufacturing operations located in Boyertown, Pennsylvania, Columbus, Ohio, and Aizu Wakamatsu, Japan.

Cabot Corporation is a global specialty chemicals and materials company headquartered in Boston, MA. Cabot's major products are carbon black, fumed silica, inkjet colorants, capacitor materials, and cesium formate drilling fluids.