Abstract: A one piece elastic binder element comprised of either one or two rubber bands. The present invention further comprises a novel method for producing rubber bands having enhanced archival binding properties, with a longitudinal grain which closes on stretching, whereby it is not susceptible to drying and embrittled breakage, and the rubber bands so produced. The elastic binder element comprises two bands or portions of a single band, being held together with two metal clamping members deployed such that the one or two bands are configured in dual, spaced, cruciformic or cross-like configurations (i.e., each configuration having a central point, defined by each of the metal clamping members, from which four arms, comprised of segments of the elastic band or bands, extend, at approximate 90.degree. intervals--full lateral and longitudinal extension). The cruciformic configurations are suitable for respective deployment on the front and rear of a file, to engage all four sides of the file, in the binding thereof.