A 3.5mm diameter 'O' ring with an internal diameter of 139.3mm. Made from Nitrile (NBR N70) rubber which is ideal for use as a drive belt on our wooden, plastic and aluminium 'V' pulleys. Suitable for use up to 70 Deg C.
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Home/Pulleys/Model Making Pulleys and Belts/Round Pulley Belts/Pulley Belt 3.5mm x 139.3mm Internal Diameter
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