Modular hardware guarantees a high-pressure seal between the tubing and end fitting, as well as a proper seating of the frit. The frit is contained in a cap that slides over the column, forming a leak-free and gap-free seal. All stainless steel modular columns use our exclusive Isobore™ internal surface finish. Modular column hardware systems include the following components: one 316 stainless steel column body, two one-piece end fittings and two frit caps containing 316 stainless steel frits in a PEEK™ cap. Modular systems are available in several IDs and lengths. Modular column systems can typically operate at pressures up to 15,000 psi (1034 bar).