FORMUFIT 1 in. PVC Internal Dome Caps in Clear fit inside a Schedule 40 PVC pipe, leaving a smooth, domed end. An exceptional solution to make a gentle finish for open ends of clear PVC pipe. FORMUFIT clear PVC inner dome caps have a smooth domed shape on the top, providing a clean, flush end to PVC pipe. Their balanced and simple appearance gives projects and applications a smooth and professional look.