The 4-Way Cross model no .EV01057 is available in the KF size 16 having dimensions 40,19.05,30,80 respectively.The 4-Way Cross are manufactured in 304 stainless steel material. The product assemblies contains two flanges, a centering ring, and an aluminum clamp. A constant supply of pressure on the clamp produces vacuum seal. The mating flange surfaces compress the O-Ring, which is fixed in place by a metal centering ring, to develop vacuum seal.