General description Light Duty Flame Retardant Anti-Vibration Rubber Lined U-bolt designed for 140 mm internal diameter (suitable for 125 mm nominal bore pipe) made from T316 stainless steel. This U-bolt features a flame retardant rubber lining that helps reduce noise and fatigue caused by vibration in pipework, while also preventing galvanic corrosion and wear on pipes. Technical specifications Internal Diameter (ID): 140 mm Nominal Bore (NB): 125 mm Pipe Outer Diameter (O/D): 139.7 mm Width (B): 83 mm Height (C): 96 mm Length (F): 135 mm Thread Size (G): 12 mm Distance (K): 89 mm Backing Pad Dimensions (D*A): 25*10 mm Tolerance on dimensions: +/- 1 mm Material: T316 Stainless Steel Other information Flame retardant rubber lining Includes 2 nuts on each leg Material Grade: Railway Grade Silicone 80sh Postcured for minimum 4 hours at 200°C Dielectric Strength (2 mm thickness): approx 24 KV/mm Flammability Temperature Index: 352°C Smoke Density: 0.005 m²/g Toxic Flame Emission: R 0.12