Improved Sealing for Plunger Pumps in the Oil & Gas Industry

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FTL Technology provides reliable high performance sealing systems into critical plunger pump applications across all industrial markets.

In particular, we work with engineers in the oil and gas industry, providing consultancy and sealing solutions to overcome their demanding challenges.

Our expertise and experience of dynamic applications including Ultra High Pressure (UHP)  and high velocity pumps has seen us establish sealing solutions that deliver and exceed the standards and reliability expected by leading pump manufacturers and end users. This extends to live loaded, low pressure and crosshead sealing systems.

Plunger pumps are reciprocating pumps suitable for use in high pressure applications of up to 3,000 bar.

Plunger pumps are used in various applications in the Oil & Gas sector including:

  • Umbilical flushing & Hydrostatic test units
  • Descaling
  • Glycol/methanol injection
  • Fracking

FTL’s Sealing Solutions for Plunger Pumps

Live Loaded Sealing Solutions

Features Advantages Benefits
  • Longer service life
  • Dry running
  • No need for additional lubrication systems
  • Lower running costs
  • Lower setup costs
Low friction
  • Reduced power consumption
  • Lower running costs
Dry running
  • No additional lubricants needed
  • No cross contamination
  • Lower consumable costs
Live loading
  • Reduced low pressure leakage
  • Controlled wear loss
  • Lower running costs
  • Reduce risk of cross contamination
  • Predictive maintenance

Spiral wound design
  • Ease of install
  • Reduced leakage path
  • Fewer joints
  • Reduction of installation errors
  • Reduced leakage
  • Longer seal life
Cartridge assembly
  • Ease of installation
  • Reduced downtime
  • Reduction of installation errors

Low Pressure Sealing Solutions

Low pressure seals can be found between the crosshead and wet end of the plunger pump assembly. With limited space, high running speeds and poor lubrication, low pressure seals are key to isolating coolant systems from leaking to the atmosphere.

FTL Technology provide custom materials and profile designs to prevent leakages and safe guard operational performance of Ultra High Pressure Plunger Pumps.

Crosshead Sealing Solutions

Within the Crosshead of a Plunger Pump, some of the most common seal failures occur due to the high speeds of the piston combined with low pressure, the lack of lubrication and high levels of miss alignment putting high demand to the seals. This in turn can lead to costly repairs due to cross contamination to the drive end.

Another common area of concern raised by Plunger Pump OEMs is the micro leakage of the hydrodynamic film on the piston assembly.

The Solution:

  • Custom materials and seal profiles to provide controlled contact area, thus reducing running temperatures and wear to the seal.
  • Seal design ensures effective self-lubrication without leakage.
  • Easy to install on-site reducing maintenance costs.

10 Benefits of FTL’s sealing solutions:

  1. Longer service life than conventional packings and chevron seals
  2. Preventing oil leakage and contamination
  3. Self-lubricating properties
  4. Cost savings possible with removal of certain lubrication systems
  5. Provide reduced low pressure leakage
  6. Can be supplied in cartridge form for easy installation
  7. Low friction resulting in low power loss
  8. Dry running capabilities
  9. Live loading allows for controlled wear loss
  10. Packing materials suitable for use in abrasive media

These benefits apply to all the various features including self-lubricating, low friction, dry-running, live-loading, spiral wound design and cartridge assembly.

“I have known some of the sales and design engineers [at FTL Technology] for 25 years or more. Their level of expertise has been maintained. The help and assistance when we are looking at sealing arrangements is invaluable, and they are always quick to respond. We use FTL products for all pump assembly sealing requirements, for both rotary and dynamic applications associated with oil lubrication and water hydraulics.

“I have no hesitation in recommending FTL to our customers and contacts when the occasion arises, and there is always good feedback. They have excellent customer facing engineers with a dedication to making sure the customer gets a product that will work - particularly in relation to heavy industry in the UK.”


As FTL has worked extensively on plunger pump sealing solutions for a number of years, we are ideally placed to assist and advise on the most effective material selection, material finish and geometry of interfacing components to optimise seal design.

Here’s a Case Study of a Live Loaded Sealing Solution for Plunger Pumps.

Contact us today to design and supply custom plunger pump sealing solutions for your specific application requirements. Get in touch to speak with an FTL engineer or download our dedicated Plunger Pump brochure here.

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