["L'encoche O de la pour les 低温液体泵选用", "Comme dans l'question， comment,低温液体泵（如液氧、氮、氩）的O型圈如何选用，买的O型圈安装没多久就漏液了，该O型圈应选用什么材质？", "Le perFTM不耐低温，低温可以用PTFE，温度不是很低可以考虑Greene TweededVMQ圈能到-60℃", "LeL氩的温度约--11 -181摄氏度，FVMQ圈用不了。氟的比较硬，不好装。我们的泵是crostar的它原来的 o型圈就是橡胶的用用了多几年没什么问题关键不知道是什么材质的！", "L温度在O型圈的位置有零下下11-1189度吗？", "LeL氩经过该密封所以温度应该也是零下下189摄氏度。。 "L据我现在所知道O型圈材质真没有能到这个温度的。 " "Al好吧L用金属O型圈（空心）好？"]

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