Introduction
Seepex is a global leader in progressive cavity (PC) pump technology, offering solutions for handling low to highly viscous, aggressive, or abrasive media with minimal pulsation. Their PC pump series are widely used in industries such as oil and gas, food and beverage, wastewater treatment, and mining. This guide explores the 8 Seepex PC Pump series, their applications, key features, with a focus on sourcing high-quality replacement spare parts from trusted suppliers like Top Level Intl.. It also provides up-to-date market insights and answers to common questions to help businesses optimize their pump operations.
SEEPEX PC Pump Series: 8 Core Series
SEEPEX structures its product lineup into 8 general series, each optimized for a different fluid challenge, installation environment, or regulatory requirement. Let’s explore what makes each series special.
N-Series: Standard Seepex Progressive Cavity Pumps
The N-Series is Seepex’s core product line of standard PCPs. These robust pumps can handle everything from watery liquids to highly viscous sludges. Seepex describes the N-series pumps as “the robust basis for all PCPs,” capable of pumping low- to high-viscosity media with or without solids. Think of the N-series as the Swiss Army knife of PCPs – versatile and reliable. They are used in countless industries like water treatment, mining, food, petrochemical, etc.
Key features of SEEPEX N-series pumps include: low pulsation flow for smooth transfer, gentle handling of delicate media, and a modular design for easy maintenance. According to Seepex, N-Series eccentric screw pumps can deliver pressures up to 48 bar (and even 96 bar in a bare-shaft variant) and flow rates from 0.01 to 500 m³/h, covering a huge range. This flexibility comes from many rotor/stator geometries and seal options. In short, if you need a general-purpose industrial PCP, the Seepex N-series is likely the go-to choice.
Sub-series under N-Series:
- BN Range: Compact, block-design pumps for general industrial use, saving space and costs.
- BNM Range: Large pumps with Rotor Joint Access (RJA) and Drive Joint Access (DJA) for quick maintenance.
- NS Range: Universal pumps with a free bare shaft, allowing flexible drive options like electric or hydraulic.
- BNA Range: Built for oil and gas, meeting API 676 standards for harsh environments.
Real-World Use: In wastewater plants(WWTP), BN range pumps move thick sludge with high solids content. In industrial plants, BNA models transfer drilling mud or oil emulsions. This series is often tagged as the sludge transfer pump or industrial screw pump, and works well with calls like best aftermarket parts for SEEPEX pumps or Seepex pump replacement parts.
T-Series – Open Hopper Pumps for High-Viscosity Media
The T-Series (open hopper pumps) are designed for sludges and thickened materials. They feature a free-floating rotor and large suction hopper, allowing them to handle chunky or fibrous slurries. Seepex notes that open-hopper pumps are used to “discharge thickened and dewatered sludges”, even directly under storage silos to control solids content. Think of T-series progressive cavity pumps as robust sludge eaters – the hopper feeds tough material into the pump without clogging.
T-series models often include ribbon agitators or solids grinders on the inlet to break up bridges or lumps. They’re common in wastewater and sludge handling in pulp/paper mills, municipal treatment, and mining. Like the N-Series pumps, Top Level Intl can supply 100% compatible parts for T-series models (stators, rotors, shafts, etc.), ensuring these sludge pumps keep running.
Popular Varieties of T-Series:
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BT: Ideal for standard sludge and recycling applications.
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BTM: Includes a macerator—great for pharmaceuticals or food waste that needs particle size reduction.
- BTES, BTH, BTQ, and others feature tailored hopper shapes for optimized feed in fermenters or pulp machinery.
Common Models: BT17-6L
Case Study: Municipal biogas facilities often use BTM pumps for dewatered sludge. The built-in cutter ensures pipe blockage is minimized, even with fibrous materials.
D-Series: Dosing and Metering Pumps
The D-Series is a high-precision metering or dosing pump. They are used when accurate, low-pulsation dosing of chemicals or polymers is needed. For instance, Seepex explains that D-series pumps are used in environmental and mining applications to “accurately dose various chemical and polymer solutions”. These pumps provide a constant, gentle flow ideal for adding additives like coagulants, neutralizers, or reagents.
Seepex metering pumps often feature finer rotor/stator tolerances and long-stroke drives to achieve precise flow control. If your process needs predictable volumes (e.g. water treatment chemical feed, or precise food ingredients), the D-series/Seepex dosing pumps are built for that. Replacement spare parts or bareshaft pumps for D-series (rotor geometry, stators, seals) are also available from Top Level Intl. For any inquiries, please email us anytime!
Sub-series:
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Range MD: Offers excellent control and stroke repeatability for general dosing needs.
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Range MDC: CIP-capable and FDA/EHEDG compliant, this is a go-to for food production and biotech.
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Range MDF and MDP: Built-in advanced metering features like pressure monitoring and pulse control.
Pump Application: Polymer dosing in water treatment plants, acid dosing in pH regulation, and enzyme dosing in beverage manufacturing.
Common models of SEEPEX D-Series:
MD025-6L, MD003-12, MD006-12, MD012-12, MD0005-24, MD0015-24, MD003-24, MD006-24, MD012-24, MD025-12T
W-Series – Economical Wobble Pumps
W-series pumps (also called wobble pumps) are of a compact, single-joint design. Instead of a flexible stator, they use a short rubber chamber and one eccentric joint, causing the rotor to “wobble” and pump. They are small and simple screw pumps. Or let’s say they are basic progressive cavity pumps. Some people also call them Entry-level PCP. Seepex describes them as “economical, space-saving, easy to maintain” with just one moving joint.
Wobble pumps handle low to medium viscosity fluids with solids. They are great for sampling, small batch transfers, or locations where space is tight. Because of their compact block design, they are often used in small food or chemical mixers. Alternative spare parts like W-series rotors and stators are smaller than those for the other Seepex PC Pump series.
Primary Pump Range:
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BW: Compact, efficient, with minimal parts—ideal for soap dispensing or recycled water circulation.
Who uses it: Schools, car washes, and small-scale production plants use BW for reliable, low-maintenance flow.
CS-Series – Food and Hygienic Pumps
In applications where cleanliness matters (food, beverage, pharma, cosmetics), the CS-Series (also known as MDP – Metering/Dosing Pumps) comes into play. These pumps comply with strict hygiene standards (like EHEDG or FDA regulations). Seepex highlights that CS pumps “fulfill even the strictest hygiene requirements”. For example, they are polished stainless steel with cleanable seals and design features preventing product buildup.
CS pumps are used for pumping dairy, syrups, sauces, creams, and other food or biotech fluids. They often have quick-disconnect joints and are easy to sterilize. Top Level Intl can provide 100% compatible spare parts to keep CS pumps in sanitary service. We can also supply FDA-approved stators for food-grade pumps and hygienic progressive cavity pumps.
Sub-Series of CS-Series:
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BCF: Uses a flexrod joint for smooth, CIP-friendly operation—used extensively in dairy and yogurt production.
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BCSB: Offers sealed joints, making it suitable for heavier-duty hygienic tasks like meat slurry pumping.
Typical Pump Application: In food plants, BCF units pump sauces and creams daily—it’s essential for those operations to stay clean and compliant. Do you operate any pumps in this Seepex PC Pump series?
E-Series – Semi-Submersible Solutions
The E-Series, often called BE pumps, are semi-submersible PCPs. These are built to pump out tanks, sludge pits, or sumps from above, without flooding the motor. For example, a BE pump sits above a tank, with a long suction riser down to the fluid. Seepex notes they are used to “empty tanks, drums, caissons, sumps and pits” and can be caged to improve suction lift.
Imagine a steel pump mounted on a floor grate, sucking thick sludge from a tank below – that’s a semi-submersible pump. They’re handy for chemical vats, waste sumps, or anywhere you cannot easily submerge a normal pump. Replacement parts (impellers, stators, gaskets) for E/BE series are similar to standard PCP parts. Top Level Intl supports submersible PC pump spare parts as well.
Unique Benefits of BE-Series:
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Shaped for vertical installations, maintaining PCP performance.
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Customized rotor and stator lengths allow exact pit-depth matching.
BE AWARE: These are ideal for sump sludge removal, chemical tanks, and oily sump wells. For example, a brewery uses E-Series units in its mash paddock to avoid pump damage from sediment accumulation.
SCT-Series – Smart Conveying Technology
Strictly speaking, the SCT Series isn’t a pump type, but a clever design improvement for N or CS pumps. SCT adds hardware that lets you replace the rotor/stator much faster – up to 85% faster, according to Seepex. In practice, an SCT pump splits or slides apart on rails so you don’t have to remove piping when servicing.
Why care? Maintenance time and downtime drop drastically with SCT. It’s especially useful in continuous processes where long shutdowns are costly. Note that SCT kits can sometimes be retrofitted to existing pumps. This shows how Seepex innovates beyond just pump models.
Why SCT-Series Matters:
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Reduces downtime shock during planned maintenance.
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Avoids mechanical realignment after part swaps.
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Adds value in high-throughput plants—water, brewing, chemicals.
Note: Split stators and smart rotors are usd in SCT screw pumps. Top Level Intl. can supply SCT replacement kits .
Regular SCT Models: BN5-6LS, BN10-6LS, BN17-6LS, BN35-6LS, BN52-6LS, BN70-6LS and BN130-6LS.
BF-Series – Battery Application Pumps
The BF-Series is a newer niche line for battery manufacturing. These pumps handle slurries and fluids used in making automotive and electronics batteries. Seepex explains that BF pumps are used “for the transfer, production and coating of battery compounds” in the automotive, electronics, and semiconductor industries. They can be regarded as mobile progressive cavity pumps and portable dosing systems.
Battery slurries can be abrasive or viscous, so BF pumps often have special rotor coatings and wear-resistant parts. They also need precise metering for coating thin film electrodes. Top Level Intl’s compatible parts (stators, rotors, seals) can be supplied for BF pumps as well, reflecting how broad PC pump applications have become.
Lastly, the BF-Series offers flexibility in fluid transfer—without wires or fixed mounting. These pumps can be powered via battery, making them indispensable for remote or emergency use.
Common Uses:
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Remote oil field emulsions
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Portable sanitation and cleaning lines
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Emergency chemical containment
How Can We Support all 8 SEEPEX PC Pump Series?
With over 15 years of CNC experience, Top Level Intl. manufactures parts that match or outperform OEM standards. Whether it’s a standard BN rotor, an SCT split stator or the split stator housing, each aftermarket parts for SEEPEX pumps is produced with tightening tolerances to ensure flawless fit and function. In addition, we can also manufacture custom CNC pump parts according to your design.
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Material options include NBR, EPDM, PTFE, FKM/Viton, Stainless Steel, Hastelloy, Ceramics, etc.
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Shaft systems—plug-in or bare—are balanced and hardened for long service life.
- Universal joints are fully kitted: Universal Joint Sleeve, Retaining Sleeve, Bushings, Pins, Holding Bands, etc.
With Quality Assurance & Regulatory Compliance
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ISO 9001:2015 ensures consistent quality and traceability.
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FDA/EHEDG compliance certifies safety for food, cosmetics, and pharmaceuticals.
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Pressure and performance testing are available on request.
With Speed Meets Global Service
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Fast Quotes: 2-hour response, 24-hour resolution on part inquiries.
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Worldwide Delivery: Logistics expertise ensures cost-effective shipping from Asia to Europe, America, and beyond.
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Confidential Projects: OEMs and OEM customers alike trust in discretion and dedicated support.
FAQs about Seepex Pump Product Series
Q1: What is a BN series pump used for?
The Seepex BN series is ideal for sludge, emulsions, and industrial fluid pumping—especially in wastewater and oil & gas.
Q2: Can you match SCT split stators for 75mm rotors?
It depends. We can supply SCT split stators for some of the SEEPEX models. They are BN5-6LS, BN10-6LS, BN17-6LS, BN35-6LS, BN52-6LS, BN70-6LS and BN130-6LS. For other pump models or rotor sizes, we will need the drawing of the specific rotors to evaluate them.
Q3: Do you offer ceramic-coated rotors for abrasive media?
Absolutely—ceramic or ceramic-insert rotors are available for maximum wear resistance.
Q4: How do I identify my pump model and parts?
You can get the pump model from the pump’s nameplate. For the pump parts, you could identify them from your pump manual. You can also share the OEM part number/position or a simple photograph—our team will match them soon.
Q5: What’s the lead time for custom parts or bare shaft pumps?
It depends. Typical delivery time for the bare shaft pumps or complete pumps is about 4 weeks after approval. For custom parts, normally 7 days. Of course, it’s faster for stocked items.
Conclusion on Seepex Pump’s 8 product series
There are 8 product series of SEEPEX NPC Pump. Let’s say series N, T, D, W, CS, E, SCT, and BF. Understanding them is the first step toward fluid system excellence. But machinery thrives on quality service parts—rotors, stators, coupling rods, driving shafts/connecting shafts, joint sets, and casings designed to OEM tolerances.
Top Level Intl. offers more than PC pump spare parts: we deliver performance, reliability, and value. Whether your plant upgrades a BN to API 676 standards, keeps a BCF feeding yogurts, or maintains an SCT program with split-stator simplicity, we’ll back you up with precision SEEPEX replacement parts built to last.
Let’s keep your pumps running without compromise and maximize your pump’s potential together. For any alternative SEEPEX parts, contact us now!
