Inside the high‑temperature, high‑pressure air system of a tire‑building line, the right‑hand threaded nipple serves as the permanent junction between the plant’s compressed‑air manifold and the inflatable drum that shapes the green tire. By providing a secure, leak‑free connection for the pneumatic hose that inflates the carcass ply, the nipple enables rapid switching of hoses during change‑over or maintenance without depressurising the entire line. Its design tolerates the cyclic temperature spikes that occur when the drum is heated for rubber curing, allowing the drum to be filled, held, and released repeatedly while preserving the integrity of the sealing surface. This reliability reduces downtime and prevents costly air losses that would otherwise affect the uniformity of the tire’s internal pressure profile. The same fitting is often found in adjacent rubber‑mixing conveyors, where it links air‑driven actuators that position and compact rubber sheets before they enter the building station, ensuring synchronized motion across the production line.