O-ring seal Statotherm R profile rings R901/B

circularexpanded graphiteelastomeric

Features Statotherm R profile rings R901/B are made from permanently elastic, expanded graphite (purity ≥ 99.85%, ash content ≤0.15 %, chloride content ≤20 ppm) without binders or fillers. Statotherm R profile rings R901/B are almost maintenance-free and are intended for exposure to extreme temperature cycling and/ or high or low temperature ranges which cannot be withstood by elastomeric O-rings. Advantages High purity nuclear grade graphite Outstanding deformability Permanent resiliency Permanent elasticity Good cross-sectional tightness Operating range Pressure: p = 500 bar Sliding velocity Pump application vg = 2 m/s Temperature Continuous operation: t = -200 °C ... +500 °C Steam: tmax+550° Recommended surface roughness: RZ = 10 - 40 μm Chemical resistance: pH = 0 … 14 Resistant to almost all organic and inorganic acids, alkalis, oils and solvents. Standards and approvals TA Luft BAM (upon request) Recommended applications Industries Process industry Petrochemical industry Chemical industry Power plant technology Building services industry Variants R901/B5: density 1.3 g/cm3 R901/B6: density 1.4 g/cm3 R901/B7: density 1.6 g/cm3 R901/B8: density 1.8 g/cm3 R904/...: reduced sulphur content < 200 ppm Notes Statotherm profile rings must only be permitted to deform in the axial direction. The sealing groove must be designed to prevent tensile stresses causedby widening of the profile rings (which are damaged by radial deformation). Forms of supply