General description Light Duty High Temperature Flame Retardant Anti-Vibration Rubber Lined U-bolt is designed for use with 40 mm nominal bore (NB) pipes. Constructed from T316 stainless steel, this U-bolt features a high-temperature flame retardant rubber lining that provides excellent durability and performance in demanding environments. Technical specifications Inner Diameter (ID): 49 mm Nominal Bore (NB): 40 mm Pipe Outer Diameter (O/D): 48.3 mm Backing Pad Dimensions: 25 mm x 10 mm Thread Size: 10 mm Overall Length (F): 80 mm Width (B): 37.5 mm Height (C): 49 mm Tolerance on dimensions: +/- 1 mm Material: T316 Stainless Steel Rubber Material: Railway Grade Silicone 60 sh Temperature Rating: -40 up to +300°C Flame Retardant Additive: 2% Specific Gravity: 1.12 - 1.16 Oxygen Index: 29% Elongation: 400 - 600% Tensile Strength: 8.5 – 13 N/mm² Tear Strength: 18 – 30 N/mm Usage The U-bolt is designed to reduce or eliminate noise and fatigue caused by vibration of pipework against the