Heat shrink tubing for fiber optic cables acts as a protector and insulator to the fragile components to ensure reliable and lasting long-distance communication. However, the information being transmitted can. Heat shrink tubing serves multiple purposes in the protection of fiber optic cables within telecom networks: Mechanical Protection: By providing a durable outer layer, heat shrink tubing shields fiber optic cables from physical damage caused by abrasion, bending, and impact. Our fiber optic heat-shrink sleeves are made of high-quality materials such as PEEK, PFA, FEP, PTFE, polyethelene and polyolefin, providing superior protection from.