The Flowserve ISC2 Series is a complete family of mechanical seals that provide exceptional reliability and standardization over the widest variety of industrial applications and equipment. ISC2 seals meet all major international standards and are designed for hundreds of pump models from global manufacturers. Facilities will immediately benefit from less inventory, greater flexibility, less downtime and longer seal life.

Advanced technology semi-cartridge split seal for pump and mixer applications. The PSS 4 split seal, with intrinsic joint alignment technology, provides the easiest and most successful installation routine to make reduced equipment downtime and increased reliability... routine.

Circpac MD seals are a segmented circumferential seal designed for fans, blowers, dryers, turbines, centrifuges and other rotating equipment. Circpac MD seals come packaged in a convenient split housing for easy installation. Standard designs consistently outperform packing, bushings, labyrinths, and felt seals with lower gas consumption over a wider range of operating conditions.

Pac-Seal elastomeric bellows component seals are designed to meet a wide variation of applications.

Flowserve believes seal excellence starts with superior design and materials. That's why Pac-Seal mechanical seals are made with using the latest engineering technology to analyze and design solutions for our customer’s most challenging applications. Our experience with diverse materials including elastomers, plastics, exotic alloys and seal face materials makes Pac-Seal mechanical seals an industry leader focused on total cost of ownership.

Dry running, non-wearing, non-damaging and low maintenance seal for powder and bulk solids handling equipment.

Circpac MD seals are a segmented circumferential seal designed for fans, blowers, dryers, turbines, centrifuges and other rotating equipment. Circpac MD seals come packaged in a convenient split housing for easy installation. Standard designs consistently outperform packing, bushings, labyrinths, and felt seals with lower gas consumption over a wider range of operating conditions.

The PSS 4-61 split seal has undergone rigorous testing and evaluation by NSF International and has been NSF/ANSI/CAN 61 & 372 certified for applications that involve drinking water, from the source to the tap. The NSF certifications cover all wetted components of the seal and demonstrate how PSS 4-61 seals meet regulatory requirements for drinking water quality, giving municipalities confidence in safe seal selection and operation.

GLS, GSS, and GSG Series seals are designed to fit the unique installation envelop and operating speeds present in integrally geared pumps and compressors. GLS seals are suitable for operating on liquid, whereas GSS seals are designed for operating in gaseous environments. GSG seals are applied at the bottom of vertical gearboxes to seal gearbox oil in and keep contaminants out.

The PL-Series of seals are pre-engineered single and dual cartridge seals with nonmetallic wetted components for use in highly corrosive chemical services where the alternative cost of high alloy metal seals is prohibitive.

The LS-300 cartridge multiple dynamic lip seal is for highly viscous applications. It is designed to run dry without the need for an external flush or lubricating barrier fluid which can contaminate or dilute the process media.

The advanced GTS seal is designed to handle real world steam applications providing the benefits of a mechanical seal in sealing steam turbines.

Based on the popular ISC2 pump seal platform, the ISC2-MW is designed with increased internal clearances that allow for greater run-out handling in top-entry mixer services, up to 0.045 of an inch. State-of-the-art thermal management reduces seal face temperatures and the internal volute groove promotes barrier fluid flow inside the seal.

The ISC2-PX-61 cartridge seal has undergone rigorous testing and evaluation by NSF International and has been NSF/ANSI/CAN 61 & 372 certified for applications that involve drinking water, from the source to the tap. The NSF certifications cover all wetted components of the seal and demonstrate how ISC2-PX-61 seals meet regulatory requirements for drinking water quality, giving municipalities confidence in safe seal selection and operation.

QB Series seals are balanced pusher seals available in single and dual seal configurations used for sealing environmentally-restricted products and meeting the most stringent regulations. The QB Series is fully compliant with API 682 Type A requirements.

UC Series seals are balanced pusher seals with a substantial single coil spring that provides exceptional performance in the most demanding services including refineries, pipelines, and petrochemical services. UC seals are fully compliant with API 682, Type A requirements.

D Series seals are based on the UC Series, and add a pumping ring built into the rotating seal face body that establishes an exclusive Plan 23 cooling chamber around the seal faces. D Series seals excel in high temperature boiler feed water and hot hydrocarbon services.

DHTW and UHTW pusher-type mechanical seals are custom engineered to deliver exceptional reliability in high energy, critical pumping applications. DHTW and UHTW seals are balanced, flexible stator cartridge seals available in single or dual seal configurations.

HSH seals are built for extended reliability in high pressure, high speed and highly viscous services such as mainline crude oil pipeline pumps. HSH seals are balanced, flexible stator cartridge seals with drive mechanisms and seal face geometries engineered for high torque loads and long-term performance. The HSH seal is fully compliant with API 682 Type A requirements.

RO Pusher Seals - A simple, proven and rugged design with dependability that has made it a favorite choice of maintenance personnel to seal ANSI chemical pumps. Heavy cross sections of the rotary components resist high levels of corrosion. Utilizing a simple rugged open rotary unit design, aggressive, abrasive and viscous fluids can be sealed easier than with other ANSI seal types that incorporate shrouded spring rotaries.

CRO Pusher Seals - A simple, proven and rugged design with dependability that has made it a favorite choice of maintenance personnel to seal ANSI chemical pumps. An economical, single coil spring, friction drive seal for use in ANSI chemical pumps with packing box seal chambers.

Europac Pusher Seals - Single, unbalanced single wavy spring seal designed according the metric DIN 24960 standard to L1k. This seal is applied on a wide range of duties, primarily in the chemical industry where DIN standard pumps are used. Standard face materials according DIN coding.

RA Pusher Seals - A single balanced seal designed to mount outside the seal chamber. No wetted metal parts (RA-C) reduce seal costs for highly corrosive services, especially on non-metallic pumps. Installs easily on the outside of the seal chamber and is suitable for metallic and nonmetallic equipment such as plastic, glass, and lined designs.

The QB-61 pusher seal has undergone rigorous testing and evaluation by NSF International and has been NSF/ANSI/CAN 61 & 372 certified for applications that involve drinking water, from the source to the tap. The NSF certifications cover all wetted components of the seal and demonstrate how QB-61 seals meet regulatory requirements for drinking water quality, giving municipalities confidence in safe seal selection and operation.

BX Series balanced metal bellows seals are engineered to drive exceptional, long-term equipment reliability and lower energy consumption. They provide exceptional reliability in corrosive and non-corrosive fluids, especially fluids that crystallize or coke in atmospheric conditions. The BX Series is fully compliant with API 682 Type B requirements. Available in single and dual seal configurations.

BXHHS and BXRH seals provide sealing capability at extreme temperatures in challenging refinery and petrochemical services. When pumping services push beyond temperature limits of elastomers, BXHHS and BXRH seals offer reliable sealing in both single and dual seal configurations. BXHHS and BXRH seals are fully compliant with API 682 Type C requirements.

BRC Series edge-welded metal bellows seals are exceptionally robust and designed to seal high-temperature hydrocarbons, heat transfer fluids and severe services in refineries and hydrocarbon processing plants. The BRC series is fully compliant with API 682 Type C requirements and features thick-plate Alloy 718 bellows convolutions for superior corrosion resistance.

Mixerpac mixer seals are a family of engineered and standard mixer seal designs in different configurations for top, side and bottom entry installation.

The VRA is an outside mounted, dry-running single seal designed for use on top-entry agitator and mixer equipment. The contacting, dry-running design eliminates the need for a buffer fluid system, while handling run-out up to 3.81 mm (.0150 in) TIR.

The MSS Mixer Seal is a top entry, split mixer seal.

ST Series seals are cartridge, dual pressurized mechanical seals, specifically designed for bottom entry agitators used in the pharmaceutical and bio-pharmaceutical industry. ST seals have been optimized for SIP/CIP and can be made with FDA compliant materials and USP Class VI polymers.

Based on the popular ISC2 pump seal platform, the ISC2-MW is designed with increased internal clearances that allow for greater run-out handling in top-entry mixer services, up to 0.045 of an inch. State-of-the-art thermal management reduces seal face temperatures and the internal volute groove promotes barrier fluid flow inside the seal.

The MWC-200 Mixer Seal is a high-engineered dual pusher seal for large size mixers.

The Ampliflow G-Boost delivers a continuous supply of clean seal gas to compressor gas seals, eliminating a source of contamination and equipment downtime. Driven by an electric motor, the Ampliflow G-Boost improves operational reliability during periods of low differential pressure across the compressor when the available seal gas supply is insufficient.

Flowserve Gaspac dry gas seals incorporate non contacting lift-off technology to provide low break away torque and reliable performance under all operating conditions. The Gaspac is a standardized modular design in various configurations.

The Circpac segmented carbon ring seal is used in turbomachinery equipment. Originally designed to help keep bearing oil away from the dry gas seals, it can also be applied as a standalone sealing solution.

Turbopac oil lubricated mechanical seals arranged in the following configurations: Product side, single mechanical seal combined with an atmospheric floating ring or labyrinth seal; Double mechanical seals in face to face arrangements.

Supplypac - Compressor Seal System: Modular-based dry gas seal support system that simplifies the typical dry gas seal control panel.

The Cleanpac line of filters includes heavy liquid removal units, hybrid coalesce / pre-filter units along with dual coalescing filter assemblies.

The Flowserve Ampliflow helps ensure that an adequate supply of clean, filtered gas is provided to the seals during periods of low differential across the compressor.

Drypac seals will reduce the potential of liquid formation between the seal faces by lowering the dew point of the gas and raising the temperature of the seal supply gas at least 20°C (36°F) above the dew point as recommended by API standards.

The RIS seal has a unique, non-clogging design that does not utilize springs or bellows. The innovative design of the adaptive components allows the seal to be installed from the wet-end of the pump and to be adjusted externally. With many pump designs, the seal may be reset automatically during impeller clearance adjustment.

Single, dual balanced robust yet simple slurry seal with low operation and maintenance costs.

Flowserve GF-200 dual seals are non-contacting, gas barrier seals used in applications where no emissions of hazardous pumped products can be tolerated. Advanced Pattern Groove System provides low speed lift-off, low gas leakage and no face contact.