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Standard features on the TR 300
300-Gallon Capacity
- The 300-gallon tank offers the material capacity required for various pavement preservation applications while maintaining a compact trailer design for easy transport and maneuverability.
Electric Brakes with Safety Breakaway System
- SealMaster heated asphalt distributors come standard with electric brakes and an integrated breakaway system to help maintain safe, controlled towing during transportation.
Easy-Access Basket Strainer
- The basket strainer reduces spray tip clogging by filtering debris before material enters the pump, making routine cleaning and maintenance quick and convenient.
Hydraulic-Driven 2-Inch Positive Displacement Pump
- The hydraulic-drive, 2-inch positive displacement pump delivers smooth, consistent material flow, helping prevent materials from hardening in the lines.

5-Gallon Diesel Wash Down System
- The integrated diesel wash down system simplifies equipment cleanup by using pressurized diesel fuel to clean valves, pumps, spray bars and wands after application.
300,000 BTU Vapor Heat System with Safety Shutoff
- The vapor heat system quickly heats asphalt materials while maintaining proper application temperatures.
- Additional safety shutoff feature enhances operator safety during operation.
Lock-Down Lid with Breather Vent
- The lock-down lid helps secure the tank to reduce material surging during transportation, while the breather vent safely equalizes tank pressure during heating and application.
50-Foot Hose & Spray Wand
- The 50-foot hose and spray wand provide the reach needed to apply material efficiently while allowing operators to work around the trailer with greater flexibility.
Vapor LP Compatible
- Designed for use with a vapor LP gas cylinder (sold separately), providing a dependable fuel source for heating asphalt preservation materials.

Safety Breakaway System

Basket Strainer

Positive Displacement Material Pump

Diesel Wash Down System

Vapor Heat System with Safety Shutoff

Lockdown Lid with Breather Vent

50-Foot Hose & Spray Wand

Honda GX240
Optional features
Custom Built to Fit Your Needs

Lever Spray Bar
Control spray bar operation with a manual lever for precise material application and consistent coverage.
Manual Spray Bar
Expand application capabilities with a manual spray bar for consistent, uniform material application. Includes operator seat and mounting components.
Overnight Heater Kit (Single)
Maintain material temperatures overnight to reduce startup time, improve productivity and lower operating costs.
Specifications
SealMaster
TR 300
Heated Asphalt Distributor
Dimensions
| Height | 66″ |
|---|---|
| Width | 72″ |
| Length | 177″ |
| Weight | 1,805 lbs. |
| Tounge Weight (Empty) | 180 lbs. |
Axle
| Axle | 6,000 lbs. |
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Engine
| Engine | Honda GX240 |
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Burner System
| Burner System | 300,000 BTU vapor heat system with safety shutoff |
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Material Pump
| Type | 2″ hydraulic-driven positive displacement pump with pressure relief valve (30 GPM) |
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Flexible Buying Options
Equipment Rentals
Try the TR 300 Heated Asphalt Distributor before you buy. Ask about available rental options to experience the performance of SealMaster’s industry-leading equipment.
Financing Options
Get the equipment you need without the upfront burden. Attractive financing options are available to help you continue growing your business.
Trusted by Contractors, Municipalities and DOTS Nationwide
Unlike others in the industry, SealMaster has the largest dedicated dealer network providing local expertise, service and parts availability when you need it. From startup contractors to established crews, SealMaster is built to support your operations at every stage.


