O-ring 9933328 is used on selected Hiab equipment to provide a reliable seal within hydraulic or fluid systems. O-rings are critical for preventing oil leaks at joints, fittings and hydraulic components. A worn, damaged or flattened seal can lead to pressure loss, contamination and reduced system performance. Replacing o-rings with the correct Hiab part number helps maintain proper sealing, system pressure and safe operation of the crane. Compatibility Part number 9933328 is fitted to selected Hiab machines. Suitability depends on the crane model and serial number. If you are unsure whether this o-ring is correct for your equipment, contact us with the serial number and we will confirm compatibility before you order. Only commonly used parts are listed on our website. We can supply any Hiab parts UK customers require, including specific seals and components identified by part number. If you cannot find the part you need, contact us with the serial number of your crane and details of the part required and we will help identify the correct item. Call: 01937 349222Email: [email protected]