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Finish Line FiberLink sealant liquid is built with Kevlar to provide faster and more resistant sealing. Fiberlink represents a new standard for tubeless tires for bicycle tires. Developed with FiberLink technology, the owner of Finish Line, this revolutionary pro -latex formula quickly, guarantees the maximum integrity of the estate and offers optimal longevity. Kevlar’s fibers work in synergy with the natural latex with rapid action to seal the punctures when they occur. The free flow latectly polymerizes to create an adhesive seal that is reinforced with interconnected Kevlar fibers.