Profile: Onehalf20 Inc. offers extruder rupture disks, melt pressure sensors, gauges, transducers, indicators, packages & accessories, pressure indicators and industrial pressure sensors. Our extruder rupture disks are primarily used on plastics extrusion machinery to provide emergency pressure relief. These are designed to instantaneously rupture at a pre-determined pressure. These are leak tight & intrinsically safe devices that require no maintenance. These assemblies are manufactured from 304 stainless steel and incorporate either an inconel/stainless steel disk which minimizes the effect of varying processing temperatures. The RD Series of extruder rupture disks are offered in a wide variety of lengths and configurations. Standard stock assemblies are available in burst pressures ranging from 1,500 up to 15,000 psi, and lengths from 1.82″ up to 12″. Melt pressure sensors are available for a wide variety of applications, including polymer extrusion processing/food and medical applications. These are available in two unique styles. The CT style is the classic melt pressure sensor offering a 6″ rigid stem and 18″ flex capillary. The RT style offers only a 6″ rigid stem. Other configurations of these two styles are also available. Our melt pressure accessories include transducer interconnecting cables & connectors, mounting hole cleaning & machine tool kit, and melt temperature sensors. We repair most melt pressure transducers manufactured by other companies. We also offer re-calibration and re-certification of melt pressure transducers.