A fiber optic splice closure designed to prevent undesired bending of optical fiber cables within the closure. The closure is generally formed of a lower base section and an upper body section that form a tight, water-resistant seal along their interface. The cross-section shape of the closure of the present invention is generally round. The lower base section includes an interior having a surface wall and an interior wall that define a slack storage area. As such, the slack storage area defined within the closure likewise has a round configuration to thereby avoid excessive bending or kinking of the un-spliced fiber positioned within the slack storage area. The fiber optic splice closure further includes a fastening means centrally disposed through the lower base and upper body sections that form a tight, water-resistant seal therebetween.