久久无码一区二区三区,国产成人精品 视频,国产真实乱对白精彩久久久,国产网站精品无xxx一区二区,一级无码婬片A片久久久自慰软件

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.

欧美精品v欧洲精品黑人 | 国产又大又粗又爽的毛片 | 人人妻人人澡人人爽DVD | 波多野吉衣一区二区 | 熟女人妻一区二区三区 | 国产女 黄A片AAAA片小说 | 日本高清人妻少妇视频免费观看 | 亚洲外露出全裸福利网站频道 | 欧美日韩另类暴露女视频 | 亚洲一区二区三区无码久久 | 久久av一区二区三区 | 少妇做爰高潮呻吟A片免费动漫 | AV导航最新地址发布页 | 国内寡亲子伦一区二区 | 大荫蒂搡BBB搡BBBB视频 | 特级做a爰片毛片A片下载老人 | 亚洲黄色视频XXXX | 国产一a毛一a毛A免费看图 | 精品国产一级A片免费看奶水多多 | 日本乱偷中文无码字幕 | 国产高清无马在线观看 | 欧美日韩精品人妻狠狠躁免费视频 | 寡妇高潮一级毛片在线播放一小说 | 国产精品 在线播放 | 开心婷婷五月色蜜桃在线 | 国产精品色欲AV亚洲三区下载 | 在线观看免费视频麻豆 | 欧美淫乱大家庭一区二区 | 中出人妻中文字幕无码 | 偷拍乱码在线一区二区 | 少妇喷白浆高清AV含羞草 | 欧美在线无码精品秘 蜜桃 国产精品一级无码毛片视频 | 亚洲国产精品欧美久久 | 免费A级毛片在线播放不收费 | 欧美日本三级片在线观看免费 | 欧美乱做爰大片免费看A片 国产91精品人妻互换在线 | 姝姝窝人体色www精品 | 中国少妇XXXX欧美老妇毛多多 | 亚洲国产精品无码中文字 | 少妇把腿扒开让我添69式电影 | 91夜夜澡人人爽人人喊欧美 |