Universal arbors mountable on tapered fishing rod blanks as non-degradable self-centering collars to which a reel seat may be mounted. The inventive cylinder-shaped arbor comprises a flexible thermoplastic resin formed as an outer cylinder, closed at one end with an integral end wall or separate disc/washer, which included a cylindrical hole to receive a rod blank. The annulus between the cylinder inner wall and the hole margin includes curved or straight centering fins secured to the cylinder inner wall that are free to flex. Flexing of the centering fins permits accommodating a wide range of blank tapers at the proper place of location of a reel seat making the arbor universal and positionally forgiving. Once the arbor is located on the blank and oriented properly, the cylinder is filled with a fluid epoxy resin, which when cured permanently secures the arbor to the blank and to the reel seat tube.
