General Information

Description: Dura-Fill PF4 is a premium quality crack and joint sealant. It is a blend of polymer modified crack sealant and polyester fibers. It is a hot applied, one part material that eliminates the problems associated with field blending. With its improved elasticity, adhesion and low temperature flexibility, Dura-Fill PF4 is well suited for moderate to cold climates.

Recommended Uses: Dura-Fill PF4 is recommended for sealing cracks and joints in portland cement and asphaltic pavements. It is designed to seal expansion/contraction joints, longitudinal and transverse cracks and random cracks.

Surface Preparation: Proper surface preparation facilitates adhesion and consequently the maximum service life of the sealant. In order for proper adhesion to occur, the crack/joint must be free of moisture, dust, loose aggregate and other contaminates. The substrate and air temperatures must be 40°F or above. Sawing, routing and/or sandblasting are the preferred methods of preparation. Use oil-free compressed air and heat to clean and dry the crack/joint immediately prior to sealing. Cracks/joints should be sized so that the maximum extension and compression do not exceed 50% of the width. Best results are obtained when the cracks/joints are opened at least ½ inch wide.

Melting and Application: Melt Dura-Fill PF4 using a conventional oil jacketed kettle equipped with agitator and temperature control devices for both the material and heat transfer oil. Carefully insert small quantities of Dura-Fill and the plastic bag into the melting equipment while the agitator is turned off. Load material slowly to avoid splash back. After the initial load has reached the recommended pour temperature, fresh material may be added to the melter. Melt only the mate-rial that will be used during that day. Purge material remaining in the kettle lines at the end of each sealing operation.

Note: The temperature of the heat transfer oil should not exceed 525°F. Do not heat Dura-Fill above the maximum heating temperature and do not maintain it at that temperature for prolonged periods of time. This could cause the material to gel in the equipment or fail in the joints. A significant viscosity increase accompanied by stringiness signals the approach of gelation. If this occurs, immediately remove the material from the melter and dispose of it.

For further details read and follow the Dura-Fill SDS, Installation Instructions for Oil Jacketed Dura-Fill Products and P&T Products’ Warranty. 

Product Specification Table

when tested in accordance with ASTM D 5329, 36, modified 3111 & 4402
Dura-Fill PF4Modified Binder
Maximum Safe Heating Temp400º F Max.400º F Max.
Application Temp370º-390º F370º-390º F
Heating Time12 Hours Max.12 Hours Max.
Penetration @ 77º F25-45 dmm90 dmm Max.
Flow @ 140º F0 mm Max.5 mm Max.
Bond: 0º F / 100 % ExtensionNA5 Cycles Passed
Softening Point190º F Min.176º F Min.
Low Temperature Flexibility- 20º F PassNA
Viscosity @ 375º F100+ Poise20 Poise Max.
Ductility @ 77º FNA40 cm Min.
Specific Gravity1.21 ApproximatelyNA
Polyester Fiber Content (by Weight of Asphaltic Components)2% Min.NA
Asphalt CompatibilityPassPass
Flash Point400º F Min.400º F Min.
Optimum Climate (Average Temperatures)-29º / 32º C Or -20º / 90º F

Product Highlights

  • Excellent Adhesion
  • NOT Self Leveling


WidthDepthPounds/100 Linear Feet


P & T Products’ Specifications
Ohio DOT, Type IV


Dura-Fill is packaged in 30lb poly bags and boxed in high-strength corrugated cardboard. Each pallet contains 75 boxes or 2,250lb of Dura-Fill.
Now also available in Dura-Melt Consumable Packaging.