Get your semi truck or trailer ready for the long road with a securely-sealed roof, with the OTR Premium Roofing Sealant & Adhesive with Expertise Built In. To prevent roofs from leaking in wet or humid conditions, this replacement sealant works to fill holes, tears, and joints with a non-yellowing and waterproof solution. Fashioned with a strong and flexible blend to maintain the best quality possible. FleetPride is your First Click in Heavy Duty.