The plastic internal post cap is designed to neatly seal the open ends of round tubes from the inside, providing a clean and professional finish. By closing the tube internally, it prevents the ingress of water, dirt, insects and debris, helping to protect against corrosion and prolonging the service life of the post. Suitable for both indoor and outdoor use, it is an essential finishing component in fencing, railing and structural tube systems.
Made from high-quality, UV-stabilised and weather-resistant black plastic, the cap can withstand long-term exposure to sunlight, rain, frost and temperature fluctuations without cracking, fading or deforming. Its ribbed push-fit design ensures quick, secure installation without the need for tools or additional fixings. Available in two standard sizes – 42 mm and 60 mm – to fit common tube diameters used in commercial, industrial and security applications.
