Non-welded connection system According to DIN2353 and ISO 8434 Nuts and cutting ring About the nuts, we could offer L series and S series. About the cutting ring, for non-welded connection, the cutting ring helps fast assembly of removable tubes, avoids welding, tapping and flaring, thus assuring maximum simplicity of complex oleo-dynamic systems. The advantages of the cutting ring: Axial strengthening, thus high degree of tube connection high degree of tightness No bulging, thus positive load distribution on the ring Radial flexibility, thus positive clamping of the tube About Walform seal, the material is FPM. For non-welded connection, comparing with welding, no preliminary or follow-up work. Sturdy, metallic seal Leak-proof Easy to assemble Short assembly times, low torque Low price Far lower tightening torque compared to all cutting-ring tube fitting system