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TECH produces and a wide range of reinforced and non-reinforced on-the-wheel repair Inserts which repair small injuries in passenger car, truck, Ag, and off-the-road vehicle tubeless tires. TECH Permacures are nylon-reinforced Inserts which are covered with grey cushion gum to allow a permanent repair of off-the-road type tires while serving as a temporary repair of on-the-wheel vehicle tires. TECH Flow Seal Inserts are non-reinforced self-vulcanizing tubeless tire Insert repairs, also produced with grey cushion gum. TECH also produces a range of non-vulcanizing string repair Inserts in various colors, widths and lengths which should be used only as temporary repairs. Use TECH 770 Chemical Vulcanizing Fluid for maximum adhesion results.