语言选择：
The faucet flushing packing system reduces the effective differential pressure by providing pressurized lubricant to the low-pressure side of the seal to increase seal life. The pressure of the high-pressure lubricating oil is predetermined according to the proportion of the mud. The value is between the mud pressure and the atmospheric pressure. Usually, each sealing ring is subjected to the same pressure difference. The pressure of the lubricating oil is generally lower than the mud pressure,preventing the lubricating oil from excessive pressure and leaking. DRB Top drive wash pipe selection of new materials, withexclusive development
Length Mm
Height Mm
Contact customer service for other sizes
120
290
100
290
95
290
95
250
92.2
290
92.2
248
92
278
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