DURA-FILL® TX300B - Crack and Joint Sealant for Moderate Climates

Dura-Fill TX300B is a hot-pour crack and joint sealant for portland cement and asphaltic pavements. As an economical and effective preventative maintenance treatment, Dura-Fill prolongs pavement life by sealing cracks and surface joints from water penetration. Dura-Fill TX300B is a single component, specially-formulated mixture of paving grade asphalt, vulcanized crumb rubber, plasticizers, and stabilizers. When melted and properly applied, it forms a resilient and adhesive compound for both cement and asphaltic pavements. 

Recommended Uses: Dura-Fill TX300B is recommended for sealing cracks and joints in portland cement, asphaltic pavements, and parking lots. It is designed to seal expansion and contraction joints, longitudinal and transverse cracks, joints between concrete and asphaltic shoulders, and random cracks. 

Surface Preparation: Proper surface preparation facilitates adequate adhesion and consequently the max-imum life of the sealant. In order for proper adhesion, 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 maxi-mum extension and compression do not exceed 50% of the width. Best results are obtained when the cracks/joints are opened at least 1/2 inch wide. 

Melting and Application: The melting kettle should be a conventional, oil-jacketed kettle equipped with an agitator and temperature-control device for both the material and heat-transfer oil. Carefully insert small quantities of Dura-Fill TX300B 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 pouring tem-perature, fresh material may be added to the melter as sealant is used. Melt only the material that will be used during that day. Purge material remaining in the kettle lines at the end of each sealing operation. The material may be safely reheated and can be applied using a pressure feed wand system or a pour pot. 

Note: The temperature of the heat transfer oil should not exceed 525 °F. Do not heat Dura-Fill TX300B 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 in-crease 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 safety data sheet (SDS), “Installation Instructions for Oil Jacketed Dura-Fill Products,” and “P&T Products’ Warranty.” 

At Road Doctors LLC, we’re committed to getting your asphalt equipment and supplies to you quickly, safely, and reliably. Our goal is to provide a smooth shipping experience from the moment you place your order to the moment it arrives at your door.

Processing Time

Orders are processed and shipped within 1–2 business days, Monday through Friday (excluding holidays). Orders placed after business hours or on weekends will begin processing the following business day.

Shipping Method

All orders are shipped via standard economy shipping, which typically takes 5–8 business days for delivery, depending on your location and the size of the order. While most shipments will arrive within this timeframe, please note that delays caused by carriers, weather, or holidays may occasionally extend delivery times.

Order Tracking

Once your order has been processed and shipped, you will receive a shipping confirmation email with tracking information so you can monitor the status of your delivery.

Shipping Destinations

Road Doctors LLC currently ships to all locations within the continental United States. For shipments to Alaska, Hawaii, or U.S. territories, please contact us directly to discuss shipping availability and rates.

Freight Shipments

Some larger equipment may ship via freight carrier. In these cases, delivery times may vary based on carrier schedules and location accessibility. Our team will contact you directly to coordinate delivery if your order requires freight handling.

Damaged or Lost Shipments

If your shipment arrives damaged or does not arrive at all, please contact us immediately so we can assist you in filing a claim or arranging a replacement. Claims for damaged or missing shipments must be made within 7 days of delivery.

At Road Doctors LLC, we are committed to providing durable, high-quality asphalt equipment and supplies that meet the needs of professionals and contractors across the industry. To protect the integrity of our products and ensure fairness for all customers, we enforce a clear and strict return policy.

Once any equipment or product has been purchased and used, it becomes ineligible for return under any circumstance. This no-return policy is in place to prevent issues related to wear, contamination, and improper handling. However, our team at Road Doctors LLC is fully committed to customer satisfaction and will work with you to resolve any product-related issues.

If your order arrives with missing parts, malfunctions out of the box, or contains shipping damage, we will arrange for the necessary replacement parts, repair services, or shipment of missing items at no additional cost to you.

In the event that a product is believed to be defective, we will review the claim thoroughly. If the item is determined to have a manufacturer’s defect and has not been altered or modified in any way, we will either repair the item or issue a full refund—at our discretion. Refunds will only be processed once the item has been returned to Road Doctors LLC, received at our facility, and inspected by our team to confirm the defect.

Please note the following terms apply:

• Used equipment is strictly non-returnable unless a proven manufacturer defect exists.
• Refunds will not be issued unless a defect is confirmed after inspection at our facility.
• Altered, modified, or customized items are not eligible for return or refund.
• All returns must be authorized in advance by our team and must be shipped to the address provided by Road Doctors LLC.

We encourage all customers to thoroughly inspect their order upon delivery and contact us immediately with any concerns. Our team is here to support you with technical assistance, replacement parts, and repair coordination to ensure your equipment functions as expected.

If you have any questions about this policy or need to initiate a service or inspection request, please reach out to our customer service team at [Insert Contact Info].

Thank you for choosing Road Doctors LLC—we’re here to keep your projects running smoothly.