The flowserve pusher mechanical seal is a robust and versatile sealing solution engineered to deliver reliable performance in demanding fluid handling applications. This design represents a high-quality Flowserve mechanical seal alternative, specifically built as a direct, interchangeable replacement for original Flowserve components. 

Model NO.: Type 21

Specification: 1'',1 1/4'',1 3/8'',1 5/8'',1 3/4'',1 7/8'',2 1/8'

Temperature: high temperature mechanical seal

Balance: Unbalanced

Type: Multi-Spring

Accreditation: ISO, SGS, UL, ROHS

Service: OEM/ODM

Origin: China

The flowserve double mechanical seal is a high-performance safety and containment solution engineered for critical pumps handling volatile hydrocarbons. This configuration, offered as a reliable Flowserve double mechanical seal alternative, consists of two sets of sealing faces arranged in series with a barrier fluid between them. It is designed specifically as a robust hydrocarbon pump mechanical seal to prevent hazardous fluid emissions, meet stringent environmental regulations, and ensure operational safety. 

The flowserve ISC2 mechanical seal is a purpose-built, high-reliability sealing solution designed specifically for heavy-duty pool and aquatic center pump applications. Engineered as a direct-fit alternative, this flowserve ISC2 Seal offers superior performance where conventional seals may fail. As a robust flowserve pump seal, its stationary cartridge design simplifies installation and maintenance, eliminating the need for complex shaft measurements. The key advantage of this stationary mechanical seal is its exceptional resistance to chlorine, bromine, and other aggressive pool chemicals, which are common causes of elastomer degradation. It is the ideal pool pump mechanical seal for large split-case and end-suction pumps, providing long service life, minimal leakage, and reliable operation in both commercial and high-capacity residential pool systems.

The flowserve cartridge seal for boiler feed water pump is a pre assembled, high performance sealing solution engineered to withstand the extreme conditions of boiler feed systems. This durable flowserve cartridge seal is specifically designed to handle high-pressure, high-temperature feed water, ensuring reliable containment and pump integrity. As a critical boiler feed water pump mechanical seal, it features robust materials (such as silicon carbide or tungsten carbide faces) and a balanced design to minimize heat generation and face wear, extending service life and reducing maintenance frequency. The cartridge configuration allows for quick, error-free installation, making it a direct, drop-in replacement for OEM flowserve cartridge seals in demanding power generation and industrial steam applications.

The Flowserve replace pump shaft seal is a high-performance mechanical sealing solution specifically engineered for the rigorous demands of hydrocarbon processing. This product is manufactured as a precise, direct-fit mechanical seal replacement for original Flowserve components, ensuring seamless interchangeability and minimizing downtime. Designed as a robust hydrocarbon pump mechanical seal, it incorporates specialized materials such as chemically resistant elastomers (e.g., FKM/Viton) and advanced seal faces (like silicon carbide) to withstand the corrosive and volatile nature of light oils, solvents, and fuels. The seal is built to handle the specific challenges of hydrocarbon services, including temperature fluctuations and the risk of emissions, providing reliable containment. This flowserve mechanical seal alternative offers a durable and cost-effective solution for critical pumps, making it an essential component for safe and efficient operations in refineries, petrochemical plants, and other demanding industrial environments.

The flowserve pac seal type 21 O-Ring Mechanical Seal is an industry-standard, general-purpose component seal designed for reliable performance in a wide range of light to moderate-duty applications. This versatile seal features a unique hexagonal drive band that mechanically locks the spring and seal face, ensuring positive torque transmission without slippage—even in higher viscosity fluids like oils and coolants. It is engineered as a direct, drop-in replacement for original Flowserve Pac-Seal Type 21 units, offering full interchangeability with standard dimensions and configurations.