PTFE sealing ring AKW

As described above, the sealing with O-Ring is the simplest and the most economic solution for not heavy working conditions. But when there are high pressures the O-Ring alone is not enough. In this specific case we must mount O-ring with one or two anti-extrusion rings, for the simple or double effect. In the range of anti-extrusion rings there’re different materials: PTFE, NBR and TPE (thermoplastic elastomer). The different proposed materials are: * TPE (thermoplastic elastomer) for type RAE * NBR 90 Shore A for type AKN * PTFE for types AKC-AKS-AKW The assembling is done in closed groove fitting the Anti-extrusion-ring before and the O-Ring after.