BSTFLEX Sewn Rectangular Bellows are custom flexible protective covers designed for machine ways, linear rails, ball screws, lead screws, actuators and other moving components with square or rectangular profiles. Their accordion-style fabric construction expands and compresses with machine travel while helping protect critical parts from dust, metal chips, abrasion, oil, coolant, sparks and heat. Each rectangular fabric bellows can be customized in width, height, extended length, compressed length, stroke, fold geometry, material and mounting configuration. Available materials include coated nylon, silicone coated fiberglass, PTFE coated fiberglass, aluminized fiberglass and other technical fabrics for standard or high-temperature applications. Custom flanges, mounting plates, reinforced ends, zipper or split designs are available for CNC machines, automation equipment, lifting systems and OEM industrial machinery.