Constructed from durable materials including Sic/Sic/Vit or CAR/SIC/VIT, ensuring long-lasting performance. Type 21 mechanical seal devised specifically for pumps with a 1.25-inch shaft size. Easy installation and compatibility with a wide range of pump models, enhancing versatility. Temperature range of -20 to 150 degrees , suitable for various pumping applications. Specifically designed for use in clean water pumps and circulation pumps, Mechanical Shaft Seal enhances the efficiency and longevity of your pumping systems, providing a reliable sealing solution for various applications., Manufacturer: PUAISJN