Originally a rubber seal for the non locking standard petrol caps it is now made of a petrol resistant poly type material that will fit any genuine petrol cap.
It has a 60mm outer diameter and a 39mm internal diameter hole which is close enough for nearly all caps made for the mini as it does stretch quite well.
(MWAOriginally a rubber seal for the non locking standard petrol caps it is now made of a petrol resistant poly type material that will fit any genuine petrol cap.It has a 60mm outer diameter and a 39mm internal diameter hole which is close enough for nearly all caps made for the mini as it does stretch quite well.