Finish Line FiberLink Tubeless Tire Sealant - 1 Gallon. Built with Kevlar to deliver faster and stronger seals FiberLink represents a new standard for tubeless bicycle tire sealant. Developed with Finish Lines proprietary FiberLink Technology this groundbreaking pro latex formula seals quickly ensures maximum seal integrity and delivers optimum longevity. FiberLink Technology utilizes Kevlar fibers that work synergistically with fast-acting natural latex to seal punctures as they occur. Free-flowing latex cures rapidly to create an adhesive seal which is reinforced with interlinking Kevlar fibers Low viscosity is ideal for race conditions Fast-acting natural latex reduces air loss Optimum longevity between refresh cycles Low odor and easy to setup