Abstract: The method of sealing microscopic holes formed in tires and similar articles during the manufacturing process including the steps of reducing the pressure within the tire to substantially atmospheric pressure, introducing an emulsion of butyl latex combined with natural fibers into the interior void defined by the tire, inflating the tire with air to super atmospheric pressure, rotating the tire to contact the microscopic openings with portions of the emulsion and then solidifying the portions of the emulsion within the openings to effect closure.

Abstract: The delivery system functions under pump pressure to introduce a fluid such as a tire sealant interiorly of a pneumatic vessel such as a tire through the air valve without deflating the vessel. A valve core extractor functions in a pressurized atmosphere to remove and retain the valve core without loss of pressure. A pump including a resilient, one way check valve introduces the fluid through the valve, also without loss of pressure. Following introduction of the desired quantity of the fluid, the valve core extractor is functioned in reverse to reinsert the valve core, all without loss of system pressure.