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目前拖拉机及汽车上油管接头的垫圈,大部分均为铜质和铝质垫圈,这种垫圈使用中容易磨损和拉槽,多次拆卸后还可能漏油。为
At present, tractors and automotive gaskets are mostly copper and aluminum washers, which wear easily and pull the groove in use, and may also leak oil after being disassembled many times. for