Description Our Stainless Steel Backing Rings are produced from a high quality 316 grade stainless steel. Our stainless steel backing rings are especially suitable for applications where standard galvanised flanges would be easily corroded for example, sewerage or marine applications. Our backing rings are supplied for use with our PE stub flanges, but are also compatible with other industrial pipework systems. PN16 drillings For bolt sizes, please see our flange tables
