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。
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。
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