RT o-ring size Jan 28, 2006 10:06:12 GMT -5 Select PostDeselect PostLink to PostMemberGive GiftBack to Top Post by hellcat on Jan 28, 2006 10:06:12 GMT -5 Anybody know the size of the o-rings that are on the fittings on the right side of the marker? I have a Rt and can't get it to tighted up so I can sweet spot it.