弹簧外置式机械密封- mechanical seal with outside mounted spring
外置机械密封
External mechanical seal
以上为机器翻译结果，长、整句建议使用 人工翻译 。
外置轴承型的轴承腔与泵腔用机械密封及骨架油封或填料隔开，密封性好。
The bearing bore and pump bore of external bearing type are separated by mechanical seal and skeleton oil seal.
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