Rotary joints and rotary unions are essential components in the rubber industry, providing reliable, leak-free transfer of steam, water, hot water, compressed air, and other process media from stationary pipelines to rotating equipment. Featuring balanced mechanical seals and carbon graphite sealing technology, they deliver dependable performance at medium rotational speeds in applications such as mixers, extruders, calenders, and tyre curing presses.
Rubber processing depends on tight temperature control at every stage — mixing, milling, extruding, calendering, and curing all call for a rotating union that won't leak under repeated thermal cycling.
Deliver steam, hot water, or cooling water to internal mixers — controlling compound temperature throughout the mixing cycle for consistent batch quality.
Supply cooling or heating water to mill rolls — holding precise surface temperature during sheeting and milling of rubber compound.
Transfer steam or hot water to extruder barrels and screws — maintaining stable temperature along the barrel during continuous profile extrusion.
Supply hot water or steam to calender rolls — ensuring consistent sheet thickness and surface finish across the roll stack.
Deliver high-pressure steam to curing bladders and molds — driving the vulcanization process that sets the tyre's final shape and properties.
Supply compressed air to rotating drums — enabling the layer-by-layer assembly and shaping of the tyre carcass on the building drum.
The CARBON series below are specified most often for rubber processing applications. Final selection should be confirmed against your operating pressure, temperature, and RPM.