The FIBERLIGN Fiber Safe is designed for protecting underground, buried and aerial fiber optic splices. More versatile and flexible than other fiber optic closures, the FIBERLIGN Fiber Safe incorporates a closure within a closure for double protection. The FIBERLIGN Fiber Safe can accommodate butt splice applications or in-line configurations using various End Plate and Splice Case combinations. Re-enterable encapsulant fills the void between the inner closure and outer Splice Case assembly to provide an additional barrier against moisture. The FIBERLIGN Fiber Safe is easily re-enterable. Unique LOCKBAR Fastening allows rapid re-entry for system additions. The closure is filled and refilled through an exterior port in the Splice Case.