NXF DN 6-100 ASTM B637,AMS 5383 Product Category Pipe Fittings Alloy G-30 HEX Head Bushing

Alloy G-30 (UNS N06030) is a Ni-Cr-Fe corrosion-resistant alloy with alloying additions of molibdenum, tungsten, copper and niobium. Generally resistant to oxidizing environments, it's extremely resistant to phosphoric acid (P2O5) and thus used widely in the production of agrichemical fertilizers. It can be seen as a low-carbon variant of alloy G, with improved weldability (it's less prone to heat-affected zome carbide precipitation and hot-cracking), and ductility.
Bushing refers to a ring that acts as a gasket. In the field of valve applications, the bushing is inside the valve cover, and generally uses corrosion-resistant materials such as polytetrafluoroethylene or graphite for sealing. In the field of valve applications, the bushing is inside the valve cover, wrapping the valve stem, and generally uses corrosion-resistant materials such as polytetrafluoroethylene or graphite for sealing.