Natural rubber, neoprene, SBR or silicon made Bus duct Bellow is used for minimizing shock and vibration in ducting systems. These ergonomically designed rubber items are also useful for promoting thermal attributes of duct system at low stress level. Light in weight, this Bus duct Bellow can endure up to 300 mm operating pressure. Hardness of such duct accessory ranges between 40 to 50 Shore A. Excellent oil resistant attributes and high temperature proof design have made these suitable for harsh working environment application purpose. This bellow is compatible with grease, silicon oil, aliphatic hydrocarbons etc. Provided accessory is highly durable and is precise in shape.