a process for manufacturing a vehicle cabin part to fit in a gap between a first component and a second component including : providing different sealing bodies each having a first lateral face conforming to an inner surface of the first component and a second lateral face spaced a certain distance from the first lateral face ; select one of the sealing bodies having a certain distance that fits the gap between the first component and the second component ; insert the selected sealing body into the gap such that the first lateral face at least partially adjoins the inner surface of the first component and the second lateral face at least partially adjoins the outer surface of the second component facing the first component .