Sealing technology manual for the process industry

Installation and assembly • Installation space must be axially accessible • Ensure that the gland packing goes far enough into the stuffing box and check the reset path • Use a cutting gauge when cutting the material • Form-pressed rings should be opened axially, then slightly flexed radially and laid over the shaft, cut end first. Next, press the sleeve completely into the installation space and tighten it according to the component specifications • Please refer to page 94 for general installation and assem- bly instructions Applications • Valves • Mixers • Homogenizers • Piston and plunger pumps • Fittings Stuffing box design THE ADVANTAGES AT A GLANCE • Broad variety of applications • Ideal for higher pressures up to 1,000 bar (in special cases up to 3,000 bar) • Broad temperature range from –200 °C to +550 °C (–328 °F to +1,022 °F) as graphite variant up to +700 °C (+1,292 °F) • High media resistance • Numerous economical standard dimensions • Simple assembly • Special solutions in compliance with TA Luft • FDA-compliant materials MEDIA PRESSURE (BAR) RECOMMENDED NUMBER OF RINGS <10 3 10 – 30 4 30 – 60 5 60 – 100 6 100 – 250 7 250 – 500 8 MEDIA PRESSURE (BAR) RECOMMENDED NUMBER OF RINGS <5 3 5 – 10 4 10 – 20 5 20 – 30 6 >30 7 MEDIA PRESSURE (BAR) RECOMMENDED NUMBER OF RINGS WITHOUT SPRING PRELOADING WITH SPRING PRELOADING 10 3 2 16 3 – 4 2 – 3 25 4 2 – 3 40 4 – 5 3 64 5 3 – 4 100 5 – 6 3 – 4 160 6 4 250 6 – 7 4 400 7 4 – 5 630 7 – 8 4 – 5 1,000 8 5 Recommended number of rings for valves Recommended number of rings for centrifugal pumps and mixers Recommended number of rings for plungers APPENDIX PRODUCT PORTFOLIO MATERIALS RESISTANCE & PURITY ENGINEERING PLASTICS ELASTOMERIC MATERIALS TECHNICAL FUNDAMENTALS INTRODUCTION 81 <103 10 – 304 30 – 605 60 – 1006 100 – 2507 250 – 5008 <53 5 – 104 10 – 205 20 – 306 >307 1032 163 – 42 – 3 2542 – 3 404 – 53 6453 – 4 1005 – 63 – 4 16064 2506 – 74 40074 – 5 6307 – 84 – 5 1,00085

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