Both standard and custom-designed sealed fiber optic cable seals are available for both small and large quantities with a variety of mounting styles and cost-efficient designs, O-ring face or piston seals, NPT seals, Conflat ®, ISO, and custom flanges including electron. Both standard and custom-designed sealed fiber optic cable seals are available for both small and large quantities with a variety of mounting styles and cost-efficient designs, O-ring face or piston seals, NPT seals, Conflat ®, ISO, and custom flanges including electron. Fibre Optic Seals from FILOform delivers reliable sealing for cables and ducts. View specifications and request expert support today. Because epoxy sealing technology is highly adaptable, designers can achieve a custom hermetic fiber optic seal no matter the cable construction, configuration or jacket the assembly requires. Douglas Electrical Components has decades of experience and expertise protecting critical fiber optic. In modern FTTx and PON networks, fiber optic splice closures are the enclosures that protect fiber splice points from moisture, dust, and physical stress. However, the sealing method used inside these closures largely determines the long-term reliability of the fiber connection. Any type, combination or length can be ordered for a wide range of applications from high vacuums to moderate or high pressures.