Portable Silicone Dispensing System for Bridge Expansion Joint Sealing (HG 300)

SKU: HG 300


Made in the USA

Used to Dispense

Common Applications

  • Bridge Restoration
  • Expansion Joints

Pneumatic Dual-Component System for 1:1 Bridge Expansion Joint Materials in 5 Gallon Pails

A dispensing system for bridge expansion joint sealing and similar applications, this machine is a pneumatic dual-component piece of equipment engineered for dispensing 1:1 ratio bridge joint sealants directly from paired 5-gallon pails. 

Compact, portable, and all-pneumatic, this system delivers precise metering and consistent flow for demanding roadway and infrastructure applications. While largely a bridge expansion joint sealing dispensing system optimized for silicone sealants like Dowsil 902, this machine can also be configured for use with other two-part chemistries, including methacrylates (MMAs), urethanes, and epoxies.

Performance Highlights

  • Precision Dual-Component Dispensing: Designed for accurate 1:1 metering of high-viscosity bridge joint sealants and other 2-part chemistries
  • All-Pneumatic Operation: Requires no electricity, making it ideal for job sites with limited power access or safety restrictions
  • Portable, Compact Design: Built with a lightweight frame that enables easy transport and setup for field-based infrastructure work
  • 5-Gallon Pail Compatibility: Engineered to dispense directly from paired 5-gallon pails, ideal for field applications and standardized supply setups
  • Customizable Applicator Options: Compatible with high-output or precision-volume applicators to suit your production needs
  • Extended Reach Capability: Supports hose lengths up to 50 feet for flexibility in challenging or spaced-out work zones
  • Consistent Flow Rates: Delivers up to 1.00 gallon per minute, depending on material viscosity
  • Made in the USA: Built with high-quality materials and domestic support

Product Specifications

  • Model: HG 300 ("Twin Bear")
  • Adhesive Compatibility: 2-Part Adhesives - 1:1 Fixed Ratio
  • Container Size: 5 Gallon x 5 Gallon Pails
  • Material Viscosity Range: 15,000 - 1,800,000 cps
  • Flow Rate: 0.25 - 1.00 Gallons per Minute (varies by viscosity)
  • Pump Power Ratio: 43:1 Catalyst, 43:1 Base
  • Air Compressor Requirement: 30 Gallon Minimum, 4 CFM Minimum
  • Hose Length: Up to 50 Feet
  • Dimensions: 40" L x 29" W x 50" H
  • Weight: 700 lbs

Customizable Options

While a dispensing system made primarily for sealing expansion joints in bridges, this system supports a range of configuration options to meet the specific needs of your application. Common customizations include:

  • Applicator Type: High-volume or precision metering applicator options
  • Hose Lengths: Custom hose lengths available up to 50 feet
  • Control Options: Gun styles and control configurations can be tailored for ease of use and operator comfort
  • Material Compatibility: System can be configured for methacrylates, urethanes, epoxies, silicones, and other specialty adhesives

Contact us to tailor the system to your exact requirements.

Compatible Materials

This dual-component system is ideal for dispensing high-viscosity 1:1 adhesives and sealants, including:

  • Epoxy
  • Silicones
  • Methacrylate (MMA) Adhesives
  • Urethane-Based Bridge Expansion Joint Sealants
  • Other 2-part, fixed-ratio structural sealants and materials
  • Dowsil 902 RCS Bridge Joint Sealant
  • Sika 728 RCS
  • ATC Ultrabond 1300 or 1
  • Dayton J 51
  • FTC EAS-06
  • Hilti HS 200
  • Kaufman SurePoxy 116
  • Kaufman SurePoxy 117
  • Simpson Strong-Tie ET-3G
  • SpecChem SpecPoxy 3000
  • SpecChem SpecPoxy 3000 FS
  • Contact us to see if your material is compatible

Submit the form below to get the Technical Data Sheet (TDS) for HG 300 sent to your email address.

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About HG Equipment

HG Adhesive Dispensing is part of APPLIED Adhesives Equipment Solutions. Since 1978, HG has manufactured high-quality custom equipment for metering, mixing, dispensing, and cartridge filling. HG machines are used in the structural glazing & curtain wall, insulated glass, automotive, and electrical industries around the world. We offer complete technical support, provide on-site training and service, and fast turnaround for replacement parts.

View all HG products

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