The method additionally includes the steps of wrapping a seal about a joint formed between the first and second ductwork components and positioning a ring clamp about the seal.
The structure and characteristic of combined sealjointring designed are explained.
阐述了组合密封中继环的设计构造及特性。
3
According to the research the main question is that the high temperature of the welding make rubber seal O-ring spoiled, the insulating joint become waste product.