So the means cannot control leak the material, then possibly is the graphite pad or the copper collar wears (for example seal face not to be smooth seriously, gap big).
如此办法不能控制漏料，则可能是石墨垫或铜环磨损较严重(如密封端面不光滑，间隙大)。
Sleeve the invention on the tail-gas tube of the engine, underlay the seal loop in the fixing collar at the two ends and screw down it.
安装时，将本发明套在汽车发动机尾气管上，在两端的 固定套圈里垫上密封圈，外面用卡环拧紧便可。
The import silica gel material seal packing collar, bears the aging not to distort, the life is long.
进口硅胶材料密封圈，耐老化不变形，寿命长。
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