| PTFE Product Features | |
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Seal outer edge: Stainless steel metal skeleton; The sealing lip can choose different PTFE materials according to the operating conditions; Can be installed in open grooves
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| Product Advantages | |
| They are characterized by low friction and stick-slip-free operation, thus reducing heat generation and allowing higher rotational speeds. Low and high temperature range (-60 to +250°C) Maximum pressure up to 2MPa; Maximum rotational speed up to 40m/s Wide range of media compatibility, commonly used in chemical, pharmaceutical and other industries, unaffected by chemicals; Widely used in pumps, separators, blowers, centrifuges, mixers, etc.; |
| Surface Machining Accuracy | ||
| Surface Roughness | Contact shaft surface | Cavity |
| Ra | 0.1~0.4 μm | <1.6 μm |
| Rmax | 1~4.0 μm | <10.0 μm |
| Rz | 0.63~2.5 μm | < 6.3 μm |
| The material contact area Rmr should be determined to be about 50-70% relative to the baseline Cref.5% when the cutting depth c=0.25xRz. The sealing pair contact surface should be polished to remove the guide helix on the shaft surface. It is best to use grinding or only local grinding and polishing on the sealing pair contact surface to avoid leakage caused by the helix generated by mechanical processing. Surface hardness 55-60HRC. |
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| Product Size Series (Not all sizes are listed in the table, please contact our company for details) |
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| d | 20 | 25 | 28 | 30 | 32 | 35 | 40 | 42 | 45 | 50 | 55 | 60 | 62 | 65 | 70 | 75 | 80 | 85 | 90 | 95 | 100 | 105 | 110 | 115 | 120 | 125 | 130 | 135 | 140 | 145 | 150 | 160 | 170 | 180 | 190 | 200 |
| D | 40 | 45 | 48 | 50 | 52 | 55 | 62 | 65 | 68 | 72 | 78 | 82 | 85 | 90 | 95 | 100 | 105 | 110 | 115 | 120 | 125 | 135 | 140 | 145 | 150 | 155 | 160 | 165 | 170 | 175 | 180 | 190 | 200 | 210 | 225 | 240 |
| b | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 12 | 12 | 12 | 12 | 12 | 12 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 16 | 16 | 16 | 16 | 20 |
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