Does anyone have any specifics on the o-ring on the hammer. Cant find anything online about it on any other forums. All I have is a part number through Odyssey in the manual but is no help. Also no I do not have the o-ring to get dimensions from. Its not a regular tank o-ring like other hammers as anyone knows its more of the squared off o-rings. Its an old marker I found cleaning out the closet just trying to fix to give to a needy kid at the field.