...25 X 30 MM Stainless Seel D Type Lacing Rings For Fixing Insulation Jackets Quick Details Of the D type lacing rings Name: D type lacing rings Material: stainless steel 304 or 316 Shape:D shape Type: Welded or non welded Wire Diameter: 3mm & 4mm in common Ring Diameer: 30mm in common D ring height: 25mm in common Usage: Lacing rings are used with lacing wire in the fabrication of insulation blankets and removable covers/pads. Note: the ring