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FLOWSERVE

Flowserve is a manufacturer of industrial flow control equipment, including pumps, valves, seals, and related components. The company was formed in 1997 through the merger of BW/IP and Durco International, both of which had established histories in fluid motion and control. Flowserve's product portfolio serves industries such as oil and gas, chemical, power generation, water management, and general manufacturing. Among its offerings, mechanical shaft seals are a core product family, designed to prevent leakage along rotating shafts in pumps, mixers, and other rotating equipment. These seals are available in various configurations, including single-spring designs, and are constructed from materials such as carbon, stainless steel, Viton, Buna, and rubber to suit different fluids and operating conditions. 3G Electric supplies Flowserve mechanical shaft seals, offering a range of SKUs that cover common shaft diameters and seal types. The seals are used in applications involving water, oils, cooking oil, and general process fluids. Key specifications include shaft diameters from 3/4 inch to 2 inches, working lengths, and maximum shut-off pressures. The seals feature single-spring mechanisms, which provide uniform face loading and are suitable for moderate-duty applications. Materials of construction include 18-8 stainless steel, 316 stainless steel, carbon sealing rings, and elastomeric gaskets (Viton, Buna, rubber) to accommodate temperature and chemical compatibility requirements. 3G Electric maintains inventory of Flowserve mechanical shaft seals and provides datasheets, logistics support, and quotation services for buyers worldwide. The product line includes type designations such as 16, 21, 31, 51, and 52, each with specific features: Type 16 is a unitized rotary seal; Type 21 is a single-spring seal with carbon ring and Viton gasket; Type 31 is designed for oil applications; Type 51 has a narrow cross-section; and Type 52 features a carbon rotating face and Buna gasket. These seals are intended for replacement and maintenance in pumps and rotating equipment, helping to reduce downtime and maintain process integrity. 3G Electric supports the Flowserve line by offering technical specifications, cross-reference assistance, and global shipping. The company serves plant engineers, maintenance managers, and procurement specialists who require reliable sealing solutions for their operations. With a focus on industrial equipment, 3G Electric ensures that customers can access genuine Flowserve components and related support to keep their systems running efficiently.

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About FLOWSERVE

Flowserve is a manufacturer of industrial flow control equipment, including pumps, valves, seals, and related components. The company was formed in 1997 through the merger of BW/IP and Durco International, both of which had established histories in fluid motion and control. Flowserve's product portfolio serves industries such as oil and gas, chemical, power generation, water management, and general manufacturing. Among its offerings, mechanical shaft seals are a core product family, designed to prevent leakage along rotating shafts in pumps, mixers, and other rotating equipment. These seals are available in various configurations, including single-spring designs, and are constructed from materials such as carbon, stainless steel, Viton, Buna, and rubber to suit different fluids and operating conditions. 3G Electric supplies Flowserve mechanical shaft seals, offering a range of SKUs that cover common shaft diameters and seal types. The seals are used in applications involving water, oils, cooking oil, and general process fluids. Key specifications include shaft diameters from 3/4 inch to 2 inches, working lengths, and maximum shut-off pressures. The seals feature single-spring mechanisms, which provide uniform face loading and are suitable for moderate-duty applications. Materials of construction include 18-8 stainless steel, 316 stainless steel, carbon sealing rings, and elastomeric gaskets (Viton, Buna, rubber) to accommodate temperature and chemical compatibility requirements. 3G Electric maintains inventory of Flowserve mechanical shaft seals and provides datasheets, logistics support, and quotation services for buyers worldwide. The product line includes type designations such as 16, 21, 31, 51, and 52, each with specific features: Type 16 is a unitized rotary seal; Type 21 is a single-spring seal with carbon ring and Viton gasket; Type 31 is designed for oil applications; Type 51 has a narrow cross-section; and Type 52 features a carbon rotating face and Buna gasket. These seals are intended for replacement and maintenance in pumps and rotating equipment, helping to reduce downtime and maintain process integrity. 3G Electric supports the Flowserve line by offering technical specifications, cross-reference assistance, and global shipping. The company serves plant engineers, maintenance managers, and procurement specialists who require reliable sealing solutions for their operations. With a focus on industrial equipment, 3G Electric ensures that customers can access genuine Flowserve components and related support to keep their systems running efficiently.

Common Applications

  • Chemical processing — Flowserve Type 21 mechanical shaft seals in pumps handling aggressive fluids, with Viton gaskets for chemical resistance.
  • Food and beverage — Flowserve Type 21 seals with rubber gaskets for cooking oil transfer pumps, preventing leakage and maintaining hygiene.
  • Oil and gas — Flowserve Type 31 seals for oil applications in industrial pumps, featuring stainless steel springs and rubber gaskets.
  • Water treatment — Flowserve Type 51 narrow cross-section seals for water pumps, with 316 stainless steel springs for corrosion resistance.
  • General manufacturing — Flowserve Type 52 seals for process pumps with carbon rotating faces and Buna gaskets, suitable for various fluids.
  • Power generation — Flowserve Type 16 unitized rotary seals for small shaft pumps in auxiliary systems, ensuring reliable sealing.

Frequently asked questions

Common questions about FLOWSERVE from 3G Electric.

What are the key specifications of Flowserve Type 21 mechanical shaft seals?

Flowserve Type 21 mechanical shaft seals are single-spring seals with a carbon sealing ring and a Viton gasket. They are available for shaft diameters including 1-1/8 inch, 1-1/2 inch, and 1-3/4 inch. Working lengths vary by model, such as 1.06 inches for the 1-1/8 inch shaft seal. The spring and hardware are made of 18-8 stainless steel. These seals are suitable for fluid handling applications and have a maximum shut-off pressure rating of 250 psi. They are commonly used in pumps and rotating equipment to prevent leakage along the shaft.

What is the difference between Flowserve Type 16 and Type 21 seals?

Flowserve Type 16 is a unitized rotary replacement pump shaft seal with a single spring, rubber gasket, and stainless steel spring, designed for 3/4 inch shaft diameters. Type 21 is also a single-spring seal but features a carbon sealing ring and typically a Viton gasket, available in larger shaft sizes such as 1-1/8 inch and above. Type 16 is often used in smaller pumps, while Type 21 is common in a broader range of fluid handling applications. Both types are mechanical shaft seals intended to prevent leakage along rotating shafts.

What materials are used in Flowserve Type 52 mechanical shaft seals?

Flowserve Type 52 mechanical shaft seals feature a carbon rotating face, a Buna gasket, and a 316 stainless steel spring. They are single-spring seals designed for 2-inch shaft diameters with a 1.5-inch working length. The carbon face provides good wear resistance and thermal conductivity, while the Buna gasket offers compatibility with many oils and water-based fluids. The 316 stainless steel spring provides corrosion resistance in moderate environments. These seals are used in pumps and rotating equipment for general process applications.

Can Flowserve mechanical shaft seals be used with cooking oil?

Yes, certain Flowserve mechanical shaft seals are specifically designed for cooking oil applications. For example, Type 21 seals with rubber gaskets and stainless steel springs are available for 1-1/8 inch and 1-3/4 inch shaft diameters and are suitable for pumps handling cooking oil. These seals prevent leakage and are compatible with the viscosity and temperature characteristics of cooking oil. It is important to verify the seal materials against the specific oil properties and operating conditions to ensure compatibility and performance.

What shaft diameters are available for Flowserve Type 31 seals?

Flowserve Type 31 mechanical shaft seals are available for 7/8 inch shaft diameters. They feature a single-spring design with a stainless steel spring and a rubber gasket. Type 31 seals are designated for oil applications in industrial settings. They are used in pumps and rotating equipment to prevent fluid leakage along the shaft. For other shaft diameters, Flowserve offers different seal types such as Type 21, 51, and 52, which cover a range from 3/4 inch to 2 inches.

What is the maximum pressure rating for Flowserve Type 21 seals?

Flowserve Type 21 mechanical shaft seals have a maximum shut-off pressure rating of 250 psi. This rating indicates the highest pressure the seal can withstand without leakage when the pump is shut off. It is important to operate within this limit to ensure seal integrity and longevity. The pressure rating may vary depending on the specific model and materials, so always refer to the individual product datasheet for exact specifications. These seals are suitable for a variety of fluid handling applications within this pressure range.