This galvanised steel backing ring is drilled to PN16 specifications and designed for use with uPVC stub flanges. It provides the strength required for secure bolted joints in pipeline systems, ensuring reliable flange connections. The galvanised finish offers excellent corrosion resistance and long service life. Suitable for water, air, and general industrial applications, backing rings are commonly paired with uPVC or ABS stub flanges to complete a flanged joint assembly.