General description Light Duty High Temperature Flame Retardant Anti-Vibration Rubber Lined U-bolt is designed for use with pipes having an outer diameter of 57 mm. Constructed from galvanised mild steel, this U-bolt features a high-temperature flame retardant rubber lining that effectively reduces noise and vibration, while also preventing galvanic corrosion and wear on pipework. Technical specifications Pipe O/D: 57 mm B: 42 mm C: 53 mm F: 90 mm G (Thread Size): 10 mm K: 82 mm X: 56 mm D*A (backing pad): 25*10 mm Tolerance on dimensions: +/- 1 mm Material: Galvanised Mild Steel Material Grade: Railway Grade Silicone 60 sh Temperature Rating: -40 up to +300°C Flame Retardant Additive: 2% Specific Gravity: 1.12 - 1.16 Flammability Test: JAR 25853b - Extinction time 64 Seconds Oxygen Index: ASTM D 2863 % 29 Tensile: N/mm² 8.5 – 13 Elongation: % 400 - 600 Tear B: N/mm 18 – 30 Usage Reduces or eliminates noise and fatigue due to vibration of pipework against the supporting structure.