A pivot joint assembly has a first part with a hole. A pivot pin passes through the hole. A second part is carried by the pivot pin to be rotatable relative to the first part. A bush has an annular sleeve with an inner face engaging the pivot pin and an outer face engaging a bore wall of the first part. A sealing ring between the bush and the first part. The sealing ring has a body attached to the first part, and a sealing member extending away from the body in a radial direction to a sealing lip which engages the bush without being attached thereto. The sealing member is resiliently compressed to urge the sealing lip towards the bush to maintain engagement with the bush in the event that the bush moves away from the body in the radial direction.