The valve stem oil seals are assembled on the duct of the in-exhaust valve to prevent overfull lubricating oil from entering the cylinder and combustor. They can reduce the amassment of carbon on the valve, improve the performance of the engine and reduce the environmental pollution caused by waste gas and save oil. In order to lubricate the duct and stem??it needs to be lubricated slightly, so they are called sealing of controlling volume of flow. Product Feature Easy to be assembled and good sealing performance at the fitting portion. Reciprocating cycles <=3000 times/min. Flow rate<=0-0.3cm3/h Product Specification/Models QB6X11X10.2-1 FKM QB8X12.5X12.5 FKM QB8X12X12.5 FKM QB8X13X13 FKM/ACM QB9X14X17.2 FKM QB9.4X15.9X12.5 FKM QB8.99X14.07X14.27 FKM QC9X15X13.2 FKM/ACM Application AUTO ENGINE
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