Water Pump Single Coil Mechanical Seal https://www.guanseal.com/product/mechanical-seal/water-pump-single-coil-spring-mechanical-seal.html Available in different materials including Carbon, Silicon Carbide (SiC), and Tungsten Carbide (TC). The choice of material depends on the specific requirements of the application. Contact Us Please leave your feedback and contact information here so that we can further communicate with you. Zhejiang Guanyu Sealing Parts Co., Ltd. Phone: +86-0576-86300555 Fax: +86-0576-86301688 E-mail: [email protected] Add: Daxi plastic injection area Wenling city, Zhejiang, China.