国产亲子伦一级A片,欧美激情在线精品一区二区三区,国产亚洲精品久久久久久郑州,专干老妇熟女6070频

News center

The current position | home page > News and information > Common problems

How to choose gasket

Since there are many types of gaskets and we can recommend the corresponding gasket models for different parts of different industrial and mining occasions, such as automobile gaskets (please inform the cylinder gasket?Transmission pad?Water pump pad?Vent gasket?Such as OEM matching or after-sale maintenance market repair use, please try to provide a variety of parameters in order to choose the quality and affordable products you need.

Selection of the gasket
Any type of gasket must have the following eight important characteristics to ensure effective sealing for a long time in harsh service environment:

Air tightness 
For the media of the sealing system, the gasket does not leak at the recommended temperature and pressure for a certain period of time.

compressibility 
The gasket and flange contact surface should be well matched after the connection bolts are tightened to ensure the sealing.

Creep resistance 
Under the influence of pressure load and service temperature, the creep resistance of the gasket should be better, otherwise, the bolt torque loss will be caused, resulting in the decrease of the surface stress of the gasket, and the leakage of the hard gas system.

Chemical resistance 
The chosen gasket should not be subject to chemical medium corrosion, and can not be polluted by the medium.

resilience 
Even under the stable condition of the system, the two connected flanges will certainly have a small displacement due to the influence of temperature and pressure, the elastic function of the gasket should be able to make up for this displacement to ensure the sealing of the system.

The uf resistance 
The gasket shall be easily removed from the flange after use and shall not be glued

No corrosive 
The gasket shall be non-corrosive to the surface of the connecting flange.

Resistance to temperature 

The selected gaskets shall be used normally at the lowest and highest temperatures of the system.

艳妇乳肉豪妇荡乳AV无码福利 | 风流少妇妇A片麻豆 | 91亚洲精品乱码久久久久久蜜桃 | 50岁老熟女X88AV | 欧洲精品久久久久毛片完整版 | 欧美三级片在线视频 | 亚洲中文字幕在线观看 | 亚洲AV无码乱码A片秀色直播 | 天天爽人人爽夜夜爽 | 91麻豆产精品久久久久久夏晴子 | 亚洲无码在线免费观看视频 | 91精品国产乱码久久久久久久久 | 少妇激情一区二区三区久久大香香 | 亚洲一区二区av | 奶好大灬好硬灬好爽在线播放 | 特级婬片A片AAA毛片咕噜咕噜 | 中文字幕乱码亚洲中文在线 | 中文字幕av久久爽一区 | 亚洲无码免费观看 | 东北女人无套内谢毛片 | 国产精品久久久久久久午夜 | 无码区免费看一级毛片A片 91成人影库一级A片 | 91在线无码精品蜜桃 | 91人妻人人澡人人爽 | 杨思敏被黑人猛烈进出 | 亚洲精品一区二区三区中文字幕 | 国产人妻 精品无码蜜汁 | 久久久久久久久一区二区 | 换脸刘涛性XXXⅩ交XXXX | 欧美久久久久久久 | 久久精品人妻少妇一区二区 | 国产一区二区三区视频在线观看 | 日韩婬乱片A片AAA真人视频 | 日韩精品无码一区二区三区电影 | 91精品人妻无码 | 人妻熟女AⅤ一区二区三区汇编 | 少妇性做爰免费视频 | 三人成全免费观看电视剧高清 | 国产搡BBB爽爽爽视频 | 少妇性BBB搡BBB爽爽爽四川 | 丰满人妻的婬乱生活2 |