In chemical, pulp, and paper industries, cartridge mechanical seals are essential for maintaining stable and continuous operations. While John Crane seals have been widely used for many years, an increasing number of users are now seeking more cost-effective alternatives without compromising performance.

Fobu Sealing Technology (Suzhou) Co., Ltd. has specialized in custom cartridge mechanical seal design and manufacturing for over 18 years. With 43 patented technologies and customers in more than 50 countries, the company focuses on delivering high-quality sealing solutions with optimized cost efficiency. The GDM Series is developed as a reliable and economical John Crane cartridge mechanical seal replacement for demanding industrial applications.

The GDM Series features static-ring compensated sealing face technology combined with a tandem, double-balanced integrated structure. This design improves stability under pressure fluctuations while avoiding unnecessary structural complexity. An integrated bi-directional flow system with a proprietary pump ring enhances barrier fluid circulation without relying on complex auxiliary components.

Compatible with API Piping Plan 52, 53A, 53B, and 54, the GDM Series allows easy system integration. Its non-insert sealing face design reduces the risk of face displacement and simplifies long-term maintenance, offering a balanced solution for performance, reliability, and cost control.