Jonard Tools’ 40 mm × 2.4 mm Fiber Protective Sleeves are designed to provide maximum protection and long-term reliability for fusion-spliced fiber optic connections. These high-performance sleeves ensure precise alignment, superior mechanical strength, and complete environmental sealing for each splice. Constructed with a durable outer heat-shrink tube, an inner adhesive layer, and a stainless steel strength member, these sleeves maintain splice integrity while minimizing optical loss. Their compact 2.4 mm shrunk diameter makes them ideal for high-density splice trays and applications requiring minimal space without sacrificing protection. This product features the following: Triple-layer design with stainless steel rod provides superior strength and resistance to bending stress Slim 2.4 mm diameter after shrinkage allows for high fiber density in modern splice trays Heat-activated inner adhesive ensures complete moisture protection and long-term stability Shrinks quickly and evenly using any standard fusion splicer heater Fits all standard fusion splicers and splice tray holders designed for 40 mm sleeves Transparent outer tube allows for easy splice inspection during and after installation Includes 100 fiber protective sleeves.