9061| 16
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O圈密封過(guò)程中擋圈的材料選用 |
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點(diǎn)評(píng)
雙擋圈是為了雙向承壓,,與耐壓高低無(wú)關(guān)系;四氟填什么也改變不了冷流本質(zhì),,高溫效果一般,,比四氟好的工程塑料好幾種
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