In combination with tube fittings and union nuts, single-edge and double-edge cutting rings from the FI-S and FI-DS series enable leak-free connections. Available in the Extra-Light, Light and Heavy Series series as per ISO 8434-1 / DIN 2353 and are suitable for rated pressures up to 800 bar (11,600 PSI). Accessories and spare parts for tube connectors and cutting ring fittings from the STAUFF Connect series made of steel with 24° internal taper. For hydraulics.