This Tri-Clover Clamp is made out of strong and sanitary 304 stainless steel. It is intended to be used with Chronical Series flanges and is compatible with all our 3" Tri-Clover fittings.The three segment hinge design provides a more evenly distributed clamping pressure compared to the traditional two segment hinge clamps. This will allow for a slightly higher service pressure rating while still providing the ease of use the wing nut style clamps provide.Specifications: Made out of 304 Stainless Steel Three segment design provides a more evenly distributed pressure making it able to withstand slightly greater pressure compared to traditional 3" TC clamps Does NOT come with silicone gaskets For use with 3" TC fittings When buying TC hardware it is important to ensure that you are ordering the correct TC fittings. Unsure about TC sizing? Please consult the sizing chart.