Single Component 55 Gallon Drum Pump for Expansion Joint Filling (AST SP 55)


Made in the USA

Used to Dispense

  • Silicones
  • Single Part Urethanes
  • Fire Stop Material
  • Polyurethanes

Common Applications

  • Joint Filling and Sealing
  • Caulking
  • Expansion Joints

AST SP 55-C: The Ultimate Single Component Drum Pump for Expansion Joint Filling & Sealing

Engineered for High-Volume Industrial Applications

When it comes to high-volume joint filling and sealing, the AST SP-55 Single Component Drum Pump sets the industry standard. Designed for professionals in need of a robust, high-performance dispensing system, the SP-55 offers unparalleled efficiency and precision.

Note: the SP-55 is a higher output version of the AST SP-5

High-Volume Dispensing: Unmatched Throughput

The AST SP-55 is engineered for speed and efficiency. With a flow rate of up to 2 gallons per minute—dependent on viscosity—this drum pump is built to handle high-volume applications. Its adjustable flow rate allows for precise control, making it an indispensable asset for large-scale, industrial operations.

Extreme Pressure Capabilities: Built for Tough Jobs

With fluid pressures up to 3,000 psi and viscosities up to 1,000,000 cps, the SP-55 is designed to tackle the most demanding joint filling and sealing tasks. Its high-pressure, self-priming feature ensures consistent, reliable performance even under extreme conditions.


  • Uses AST CMP metering pump
  • Flow up to 2 gpm dependent upon viscosity
  • Fluid pressures up to 3,000 psi
  • Viscosities up to 1,000,000 cps
  • Optional pneumatic elevator
  • 5:1 to 30:1 power factor ratio
  • Adjustable flow rate
  • 55 gallon drum feed with follower plate
  • High pressure / self-priming
  • 6″, 8″, or 10″ diameter drive cylinder
  • Pneumatic powered
  • Metered shots or continuous flow
  • 3″ diameter double post pneumatic arm
  • Pumps abrasive materials

Common Compatible Materials

  • Polyurethane
  • Silicone
  • BASF Masterseal NP1
  • BASF Masterseal 150
  • BASF Masterseal SL1
  • BASF Masterseal TX1
  • Crafco Roadsaver
  • Dow 890
  • Dow 888
  • GE Silicones Dynatrol I-XL
  • Pecora 890 NST
  • Pecora Dynatrol I-XL
  • Pecora NR-201
  • Sika Sikaflex 1a
  • Sika Sikaflex 1c SL
  • Sika Sikaflex 15 LM
  • Sika Sikaflex 11 FC
  • Sika Sikaflex Textured
  • Sika Sikasil 728SL
  • Tremco Dymonic
  • Tremco Dymonic FC
  • Tremco Vulkem 45
  • Tremco Vulkem 116
  • Contact us to see if your material is compatible

About AST Equipment

Adhesive Systems Technology (AST) equipment is manufactured in Minnesota, USA and is part of APPLIED Adhesives Equipment Solutions. APPLIED is continuing its commitment to engineering and the development of adhesive dispensing systems and automation solutions for the industrial and construction markets.

View all AST products

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