Flange Seals…Great Alternative to O-Rings Hydraulic flange seals are manufactured from high-grade polyurethane and work extremely well for aggressive, heavy-duty and high pressure applications. Flange seals provide better resistance than O-rings to extrusion and compression within a working pressure of approx.350 bar and temperature of -35 to 90 degrees centigrade. Unlike common O-rings, the seals… Continue Reading