Large Diameter Refills

Blackjack’s RE-640 Large Diameter Refills are engineered for sealing larger punctures in commercial, industrial, and off-road radial and bias-ply tires. These high-strength repair strings are made from tough, fiber-reinforced rubber that delivers an airtight seal and superior durability in high-stress environments. Designed for use with standard tire plug tools, RE-640 refills are ideal for quick and effective roadside or shop repairs. Whether you're maintaining a fleet of work trucks, semi-trailers, agricultural vehicles, or heavy construction equipment, these large-diameter refills are built to keep you rolling with minimal downtime. Compatible with a wide range of tire sizes and brands, they’re a must-have for serious tire professionals.