国产成人免费在线观看,五十路老熟女 码A片,西西4444www无码精品,免费观看自慰喷水www久久久,99久久夜色精品国产9.9热人

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.

亚洲AV无码国产成人久久麻豆 | 久久久亚洲综合久久久久久 | 精品人妻久久久久一区二区三区 | 国产精品成人久久久久 | 91精品成人无码A片 美女黄视在线免费观看 | 性无码一区二区三区在线观看 | 国产睡熟迷奷系列精品视频 | 日韩人妻无码精品一专区二三压 | 欧洲熟妇的性久久久久久 | 精品人妻无码一区二区在线影院 | 欧美老妇交乱视频在线观看 | 亚洲欧美动漫偷拍 | 欧美韩日综合一区 | 国产米直品久久久久 | 全光裸体一级A片免费看 | 国产在线精品一区二区不卡了阿恩 | 国产又粗又猛又爽又黄的视频四川 | 人人妻人人爱人人做人人爽性色AV | 17.c 蜜桃视频 红桃视频 | 久久综合精品国产二区无码 二区无码不卡 | 久久久久久久久久久无码视频 | 50岁老妇女一级毛片 | 姝姝窝人体www聚色窝 | 日韩成人A片高潮猛叫农村妇女 | 一本一本久久a久久精品牛牛影视 | 久久久午夜精品图片 | 少妇精品久久久一区二区三区 | 丰满人妻熟女中文字幕 | 狠狠色婷婷久久一区二区三区 | 国产乱码一区二区三区在线观看 | 粉嫩AV一区二区三区 | 特级西西444WWW大精品视频 | 色五月婷婷丁香五月婷婷 | 成在线人永久免费视频播放 | 亚洲 XXXX222318 | 国产suv一区二区 | 奶大灬好爽灬一进一出 | 黄色AV污污污大片在线看自拍 | 91国精产品自偷自偷综合麻豆 | 俄罗斯一区二区无码 | 亚洲AV无码乱码国产精品黑人 |