Flowserve DS-4614-5-F DuraClear Barrier Fluid

Overview

Flowserve DS-4614-5-F is a genuine Flowserve DuraClear pure synthetic mechanical seal barrier fluid, formulated for high and low temperature double and tandem seal systems on centrifugal pumps and rotating equipment. Meeting 21 CFR 178.3570 requirements for incidental food contact and authorized by the USDA for use in federally inspected meat and poultry plants, the Flowserve DS-4614-5-F is a nontoxic, nonhazardous barrier fluid free of heavy metals, purpose-built to protect mechanical seal faces while eliminating product contamination risk in sanitary and food-grade process applications.

With engineering support in Muscat, Seven Star LLC supplies Flowserve DS-4614-5-F barrier fluid to industrial plants throughout Oman and the GCC. Every drum shipped from our Muscat-based facility is sourced directly through Flowserve’s trusted supply channel, ensuring authentic DuraClear formulation, correct viscosity grade and full compatibility with existing Flowserve mechanical seal systems already installed across regional food processing, desalination and pharmaceutical facilities.

Operating Principle

The Flowserve DS-4614-5-F functions as a barrier fluid circulated between the two seal faces of a double or tandem mechanical seal arrangement, maintaining a stable pressure boundary that keeps process fluid from escaping to atmosphere while lubricating and cooling the seal faces during operation. The pure synthetic base oil is engineered with a viscosity of 5.1 cSt at 40°C, a flash point of 160°C (320°F) and a pour point of –92°F (–69°C), giving it stable lubricating performance across a wide operating temperature window without breaking down or forming deposits on seal faces.

Because the fluid is formulated without heavy metals or hazardous additives, it poses minimal risk of product contamination should minor seal leakage occur, a critical consideration in food, beverage and pharmaceutical manufacturing where regulatory compliance is non-negotiable. The synthetic formulation resists oxidation and thermal breakdown far more effectively than mineral-oil barrier fluids, extending seal life, reducing unplanned seal failures, and lowering the total cost of ownership for continuous-duty rotating equipment across process plants.

Engineering Design of the Flowserve DS-4614-5-F

DS-4614-5-F is supplied as a ready-to-use pure synthetic fluid packaged in 55-gallon drums for direct connection to seal support systems, including API Plan 52, 53A, 53B and 53C barrier and buffer fluid circulation loops. Its low pour point and high flash point make it suitable for both high-temperature process seal applications and cold-start conditions encountered in outdoor-installed rotating equipment across GCC industrial sites.

The fluid is compatible with the elastomer and seal face materials commonly specified in Flowserve mechanical seal cartridges, and its stable viscosity profile ensures consistent hydraulic performance within seal support reservoirs, coolers and circulation piping. Because it meets USDA H-1 incidental food contact requirements, DS-4614-5-F can be used without special isolation measures in sanitary process pump applications where regulatory documentation is required for plant certification.

Genuine Flowserve DS-4614-5-F is formulated from a hydrogenated oligomer of 1-decene, a polyalphaolefin-type synthetic hydrocarbon base stock, giving the fluid its characteristic colourless-to-pale-yellow appearance, mild odor, and a density of approximately 0.79 at 20°C – roughly 20% lighter than water and consistent with its complete insolubility in aqueous process streams, a property that further limits any contamination pathway should minor cross-mixing occur at the seal faces. Facility teams should store DS-4614-5-F in its original, sealed container in a cool, dry, well-ventilated area away from direct sunlight and ignition sources; while the fluid itself is nontoxic and nonhazardous to the process side of the seal, manufacturer safety documentation classifies the concentrated product as harmful if inhaled in vapor form and as an aspiration hazard if swallowed, so standard industrial handling precautions – adequate ventilation, chemical-resistant gloves, and eye protection during drum transfer – remain good practice during bulk handling and reservoir top-up.

Key Features

The Flowserve DS-4614-5-F barrier fluid delivers dependable performance around the following capabilities:

• Pure synthetic formulation meets 21 CFR 178.3570 and USDA H-1 incidental food contact requirements.
• Nontoxic, nonhazardous composition with no heavy metals reduces product contamination risk on seal leakage.
• Stable 5.1 cSt viscosity at 40°C provides consistent seal face lubrication and cooling performance.
• 160°C (320°F) flash point and low –92°F pour point support wide operating temperature ranges.
• Compatible with API Plan 52, 53A, 53B and 53C seal support system configurations.
• Resists oxidation and thermal breakdown for extended service life versus mineral-oil barrier fluids.
• Genuine Flowserve DuraClear formulation ensures compatibility with existing seal cartridge materials.

n

• Colourless-to-pale-yellow appearance with a density of approximately 0.79 at 20°C simplifies visual contamination checks during reservoir inspection.
• Reduces unplanned seal failures and maintenance costs across continuous-duty rotating equipment.

Industrial Applications

The Flowserve DS-4614-5-F is widely used as barrier and buffer fluid in double and tandem mechanical seal systems across food and beverage processing lines, pharmaceutical manufacturing, and sanitary process pumping applications where regulatory compliance and zero-contamination risk are mandatory. In Oman’s growing food processing, dairy and pharmaceutical sectors, as well as desalination and utility water treatment facilities across Muscat, Sohar and Salalah, DS-4614-5-F ensures mechanical seal reliability on critical rotating equipment without compromising product safety certifications.

Seven Star LLC supplies DS-4614-5-F barrier fluid to plant maintenance teams, EPC contractors and OEM pump packagers throughout the region, with manufacturer documentation available on request. Facilities across Sohar’s industrial port zone and Salalah’s free trade zone rely on Seven Star LLC for genuine Flowserve seal support fluids with full batch traceability.

Technical Specifications

Storage and Shelf Life

Piping Plans, Seal Faces and Pack Sizes

Request a Quote for Flowserve DS-4614-5-F DuraClear Barrier Fluid

Seven Star LLC invites facility engineers and procurement teams across Oman and the GCC to submit a formal RFQ for the Flowserve DS-4614-5-F barrier fluid. Working closely with plant engineers in the region, we supply on request with lead time confirmed at quotation, provide technical datasheets and safety data sheets on request, and offer direct access to our rotating equipment division for seal support system guidance. Contact Seven Star LLC today to secure genuine Flowserve DS-4614-5-F with full manufacturer traceability and regional warranty backing.

Related Products

• Grundfos NB Single-Stage End-Suction Centrifugal Pump
• Grundfos DME Digital Dosing Pump
• ALLWEILER TRILUB TRL V16-40R41 SDCREW Pump Complete
• Grundfos CR Vertical Multistage Centrifugal Pump
• Normalab 60606 Circulation Pump for NDI 450 Coolant Circuit
• NETZSCH NEMO BY NM038BY Progressive Cavity Pump